How To Change Ford 7.5 & 8.8 Differential Fluid

How To Change Ford 7.5 & 8.8 Differential Fluid - Ford Mustang

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9 жыл бұрын

This is a step by step instructional video on how to change the fluid in a Ford 7.5 & 8.8 differential. While I’m working on a ’98 Ford Mustang, this video applies to many Ford models & years since these rear ends have been in use for decades.
I show many tips & tricks to make this job quick, easy & painless. The actual labor part of this job takes about an hour, even if you take your time. The longest part is waiting for the RTV to cure, which is 12 to 24 hours. There are gaskets available at most auto parts stores that work very well too. Use a gasket instead of RTV if you don’t want to wait for it to cure.
I also cover things to look out for and inspect while you have the differential cover off, and even find a problem with my differential in the process.
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My "'98 Ford Mustang 3.8L Repair & Maintenance" Playlist:
• '98 Ford Mustang 3.8L ...
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The information in this video is for educational purposes only. Pet Rock assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use the information in this video at your own risk. Pet Rock recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Pet Rock.

Пікірлер: 190

@joeforbes2434 3 жыл бұрын

Great video. I especially like the extra checks and how detailed the steps were. Thanks!

@petrocksgarage 3 жыл бұрын

Thanks a lot. I appreciate it.

@hoopadoopa204 6 жыл бұрын

I have to tackle this project on my own coming up because I have a leak in my differential for my 03 gt. I'm fairly confident that this video is currently and will be a lot of help soon when I start this!

@petrocksgarage 6 жыл бұрын

Good luck and I hope my video helps you out.

@lucbegin7334 4 жыл бұрын

Well detailed and you covered many steps others dont: well done!

@petrocksgarage 4 жыл бұрын

Thanks a lot. I appreciate it.

@BoostedBuckets 8 жыл бұрын

You should always make sure the full plug will come out BEFORE you try and drain the fluid so you know you can fill it back up....

@petrocksgarage 8 жыл бұрын

Good point… but if you can’t remove it you’ve got larger problems then your diff fluid.

@newedgefrank3257 4 жыл бұрын

Boosted Buckets it ain’t welded mister

@bernardcoyle514 Жыл бұрын

Incredible guide and thanks for the step-by-step instructions on how to clean and repair the differential

@petrocksgarage Жыл бұрын

Thanks a lot. I appreciate it.

@tracykey9227 2 жыл бұрын

Don't know if youre still monitoring feedback on your video, but just want to say, excellent video Pete. Thanks for your time and detail. I know this vid is 7 yrs old but it's timeless. Been a while since I've done a fluid change in one of my mustangs, but a quick refresher vid is always a plus; actually brought a couple things to light for me for my 93 4cyl 7.5" diff. Dropped my tank to replace my dead "stock" 60lph fuel pump(swapping with a 115lph, so better flow volumn im suspecting), and with the diff being right there, figured it only makes sense to change the fluid now. More money than I wanted to put into since I'm selling it, but feel better making it right for the next fox fan lol. Anyway, thank you, again, for your time in puting this together.

@petrocksgarage 2 жыл бұрын

Yes, I'm still monitoring my videos and post new ones when I get time to edit them. I'm glad my video helped you out. Thats why I make them. IMO, as long as the info in the video is relevant then its age doesn't matter. Since this isn't a 'current events' or 'pop culture' video and Ford 7.5 & 8.8 diffs are still on the road, this video should have some legs.

@JoseMorales-vw4qf 6 жыл бұрын

Great...really informative...Thanks for Sharing your know how to

@petrocksgarage 6 жыл бұрын

Thanks a lot. I appreciate it.

@dennisbraxton3770 5 жыл бұрын

This video helped me out allot thank you so much.

@petrocksgarage 5 жыл бұрын

Thanks a lot. I'm glad my video helped you out.

@geomaz35 2 жыл бұрын

Phenomenal instructions. Subscribed.

@petrocksgarage 2 жыл бұрын

Thanks a lot. I appreciate it.

@irocproject 4 жыл бұрын

Great video for the instructions help tremendously.

@petrocksgarage 4 жыл бұрын

Thanks a lot. I appreciate it. I'm glad my video helped you out.

@Laserred01 4 жыл бұрын

Excellent video, gonna have to check out your others!

@petrocksgarage 4 жыл бұрын

Thanks a lot. I appreciate it.

@cameronbevan4094 6 жыл бұрын

I just saw your rear brake video. I noticed crap all over the pan area. My dad said it's leaking differential fluid, you better fix it. I didn't know how to fix...you sir are the only vids I'll watch

@petrocksgarage 6 жыл бұрын

Thats great. I'm glad my videos are helping you out. Thanks for watching & commenting. I appreciate it.

@henrypapa6187 5 жыл бұрын

Great video and very informative!!

@petrocksgarage 5 жыл бұрын

Thanks a lot. I appreciate it.

@roadstar499 6 жыл бұрын

just finished...went very easy... fluid seemed clean.i saw no wear or metal filings...it did seem a little low on fluid...thanks again

@petrocksgarage 6 жыл бұрын

Thats great. I'm glad my video helped you out.

@ApexHotShot 9 жыл бұрын

Another informative video. I learn a new trick or detail with each of your videos. I will look for one of those pump devices for the gear lube bottle on my next trip to the auto parts store. (Way better than just squeezing the oil out of the bottle.) Also, the axle tube vent is often overlooked by mechanics.

@petrocksgarage 9 жыл бұрын

Bryan Thomas, thanks a lot. I appreciate it.

@vensonjfridiskojpodkgflflg8256 8 жыл бұрын

+Pet Rock's Garage jroyptf

@petrocksgarage 8 жыл бұрын

+Vensonjfri d iskojpodkgflfl g lffkf Cordellgfodyju, huh?

@cmurphy981 6 жыл бұрын

Great video... I learned a lot. Thx

@petrocksgarage 6 жыл бұрын

Thanks a lot. I appreciate it.

@math1717 5 жыл бұрын

Thanks a lot very helpful !!!

@petrocksgarage 5 жыл бұрын

No problem. Glad to be of service.

@kevinagnew6878 Жыл бұрын

Wow that is really thorough that is very important that is awesome thanks

@petrocksgarage Жыл бұрын

Thanks a lot. I appreciate it.

@SteveRobReviews 9 жыл бұрын

Nice- well done. Thanks

@petrocksgarage 9 жыл бұрын

Thanks a lot, I appreciate it.

@genericdude6551 2 жыл бұрын

I got my fluid changed about a month ago. It was a fairly difficult job especially with getting the fill plug removed. There was some kind of large metallic piece that made the fill more difficult to get at. Anyway, the job was completed. I sure have a nice shiny cover but I forgot to install a larger magnet like you did - I'll consider doing that at the next change. I installed a regular gasket instead of RTV. I'm always amazed that I don't have leaks after any fluid change.

@petrocksgarage 2 жыл бұрын

I wouldn't worry about the larger magnet. It's optional. It will be OK until your next fluid change. I don't think there was a gasket available for the 7.5" diff when I recorded this video. However, it is now and I recently switched to a gasket on that diff and it too hasn't leaked (yet). Fingers crossed for yours and mine.

@thymanbearpig7555 Жыл бұрын

@@petrocksgarage I'm guessing this is something like the felpro gasket RDS 55081? These go on dry, no RTV right

@petrocksgarage Жыл бұрын

@@thymanbearpig7555, yeah. Part number depends on the differential you have installed, including bolt hole pattern. And yes, they go on dry.

@Li-gb2lp 9 жыл бұрын

Thank you for your share.

@petrocksgarage 9 жыл бұрын

Ocean Li, no problem. Thanks for watching & commenting.

@doughoover6635 2 жыл бұрын

Great video I've been working on a Chevy Silverado in 1999 but it had the four gears in there so basically the same concept. I have no mechanical experience everything fell apart I couldn't get it back together and I laid under there about eight hours with no luck. Video at 4:00 in the morning I got up at 8 got under the truck held the spider gear turned it put the other spider gear on turn it presto!!! I could not believe it. Thank you for that great video now do you have one for the driveshaft..lol!!

@petrocksgarage 2 жыл бұрын

Yeah, how the gears mesh and work together can be a bit of a mind twister. But once you figure it out it seems so simple. I'm glad my video helped you out. Thanks for watching & commenting. I appreciate it.

@buzzgreen612 7 жыл бұрын

Well done.

@petrocksgarage 7 жыл бұрын

Thanks a lot. I appreciate it.

@patrickwelch620 3 жыл бұрын

great video. do you have a video on removing the axle shafts?

@petrocksgarage 3 жыл бұрын

Yup: kzfaq.info/get/bejne/jdSKlpp1x9SRhp8.html

@genericdude6551 2 жыл бұрын

If you're lucky, you'll have 2 metallic tags on your rear axle that tells you what type of fluid to use as well as details as to what the OEM gear ratio is and the gear size (i.e. 8.8). Turns out that my 02 Mustang has both tags attached. It'll be a good idea to reattach those tags when you reattach or replace the cover. I suppose some mechanics don't bother reattaching the tags. I noticed one of the tags were missing in this video (the one on the drivers side that has the required fluid type).

@petrocksgarage 2 жыл бұрын

I didn't know there was a second tag for the fluid. I haven't seen a diff with one. That would be nice. Ifs common for these tags to break or rust away.,

@vapemcvaperson 7 жыл бұрын

Awesome 👌

@petrocksgarage 7 жыл бұрын

Glad to be of service.

@genericdude6551 2 жыл бұрын

You're the second video that says the service manual says to use 80W90 while mine says 75W140 for an 8.8 differential. One of the tags attached to my differential also says to use 75W140 full synthetic. I have a 2002 Mustang GT with a tag that identifies the differential as 8.8 inch. My manual did say that a 7.5 inch differential takes 80W90 but I thought you were working on an 8.8. This is why I watch these DIY tutorials several times before committing to doing the work.

@petrocksgarage 2 жыл бұрын

This diff is a 7.5". I double checked my factory service manual for this '98 Ford Mustang and it does not distinguish between the 7.5 & 8.8 in the chart for type of fluid. It just says to use 80W90, and to add friction modifier if the diff is a limited slip diff (which the one in the video is not). Either way, if your diff has a tag stating what type of oil to use I would use it.

@cameronbevan4094 6 жыл бұрын

Should I have the rear up on jacks so differential drops down, correct?

@petrocksgarage 6 жыл бұрын

Yes, like I show in the video. Its not required but it makes getting access to all the bolts on the diff cover a lot easier.

@waltergonzalez4890 2 жыл бұрын

Good.job.

@petrocksgarage 2 жыл бұрын

Thanks a lot. I appreciate it.

@jimnyilas2465 6 жыл бұрын

How much oil should I purchase? as told I should pick up some Royal Purple 75W140 for my daughter's stock 94' 5.0L Mustang GT.

@petrocksgarage 6 жыл бұрын

The brand really doesn't matter. It is the weight/viscosity that does. 75W-140 should be fine. A little thick, but should be OK. I run 75W-90. Your owners/service manual should indicate how much oil you need. But it is typically around 2 to 3 quarts. Fill until oil starts coming out the fill hole. If, when you are done, you have an unused quart, just return it. If it has a Limited Slip Differential then make sure to get 8oz of friction modifier from your local auto parts store too and put that in before adding oil. Good luck.

@malachisharp2695 4 жыл бұрын

Wish i found this video, before I did my 98 cobra. No leaks yet, but i didn't inspect the gears, or put a magnet in mine, seeing as it didn't have 1.

@petrocksgarage 4 жыл бұрын

If you drive it like you stole it, you'll be changing the diff fluid again soon enough. :-) The stock diff does actually have a magnet. Its part of the fill plug. I just think it's not big enough, that's why I added one to the bottom of the case.

@Themsvtcobra 7 жыл бұрын

what's the diferent between7.5 and 8.8 fhysically

@petrocksgarage 7 жыл бұрын

Mainly the physical size and gear combinations.

@Sandbag1300 9 жыл бұрын

I watched this video and the transmission fluid video. My dealership can change transmission and differential fluids within 5 hours. What type of gasket sealant do they use to be able to make those changes so quickly?

@petrocksgarage 9 жыл бұрын

Sandbag1300, they are either not letting the RTV cure for long enough (takes an hour for it to start curing and 24 hours for it to be fully cured) or they could be using Permitex Right Stuff. I haven't used 'Right Stuff' yet, but I've heard good things about it and that it has a very quick curing/drying cycle compared to RTV. Either way, it doesn't take 5 hours of labor to change the tranny & diff fluid. So the dealer is probably charging you for hours that the truck is sitting in the parking lot waiting for the sealant to cure.

@Sandbag1300 9 жыл бұрын

Yes, my dealer charges me full rate card and 20 percent above list price for parts. Since my Jeep is now 10 years old I am doing most, if not all, of the work my self including all fluid changes. Your videos are a great help.

@petrocksgarage 9 жыл бұрын

Sandbag1300, ouch. Thats highway robbery. I only ever let a dealer touch my vehicles if the repair is under warranty. Other then that, I do it myself or find an independent shop who can. I'm glad my videos have helped you out. Thats why I make them. I appreciate it.

@ponyxpress3 2 жыл бұрын

I have a 66 mustang with 289 and 2.80 gear 8" differential. Do you know if a 67 mustang 8" differential would bolt up and how can i tell if its limited slip by looking at gears?

@petrocksgarage 2 жыл бұрын

I'm not sure if it will bolt up. I've never worked on those vintage Mustangs or dfferentials. Re Open vs LSD: jack up the rear of the car and spin one of the rear tires. If the other wheel spins in the opposite direction you have an Open Differential (like in this video). If it spins in the same direction you have a limited slip differential. Hope that helps. Good luck.

@leocadena6844 6 жыл бұрын

Hope you can answer this please. I'm replacing the pinion bearings and races, when setting the backlash and contact pattern without the crush sleeve .. what would you say the preload should be at that stage? I know I should look for around 24 in/lb for the final re assembly. Maybe 5 or 8 in/lb less? (ranger 7.5 open diff)

@petrocksgarage 6 жыл бұрын

Sorry, I'm not entirely sure on what the spec is. I don't have my service manual handy at the moment. I'd pick up the factory service manual for your year/model ride and use it's procedure & specs. It will pay for itself with this job alone. You might be able to find one free online if your Google-Fu is strong. Otherwise you can order one from your local ford dealer or get a used one off eBay. Avoid Chiltons & Haynes manuals. They are the cliffs notes of manuals, IMO. Good luck.

@leocadena6844 6 жыл бұрын

Pet Rock's Garage THANKS!

@13salinaspride 7 жыл бұрын

is this the same for a v6 05 ford Mustang?

@petrocksgarage 7 жыл бұрын

Yes.

@genericdude6551 2 жыл бұрын

I'm confused. My 02 GT owners manual states that the rear axle fluid isn't to be changed or checked unless the axle has been immersed in water. Or when service is required - what does that mean?

@petrocksgarage 2 жыл бұрын

Oil does not last forever. Especially when been mashed in a gear system like a differential. Even more if its a Limited Slip Differential because of the clutch material getting in the oil. The rule of thumb is to change it every 60k miles. It also gives you an opportunity to inspect the gears to make sure there isn't any excessive wear or play (all signs of a problem). At a minimum you should check the level every once and a while. Especially if there is a leak at the axle seals, diff cover, vent tube or pinion seal. Hope that helps.

@8953147 8 жыл бұрын

Do you perform maintenance on Toyotas or Hondas? Very revealing video with excellent commentary!!

@petrocksgarage 8 жыл бұрын

+jake ounce, thanks a lot. I appreciate it. I work primarily on my own personal vehicles and any sucker, I mean friend, who needs work done on their car.

@8953147 8 жыл бұрын

+Pet Rock's Garage I have been helping my friends too with their car troubles. I only visit certain sites with great tutorials and yours is one of them! Keep up the good work Pet.

@petrocksgarage 8 жыл бұрын

+jake ounce, thanks a lot. I appreciate it.

@rogerpitchford5115 5 жыл бұрын

Do you have to wait if you are using a gasket like you do with the rtv?

@petrocksgarage 5 жыл бұрын

No, you don't have to wait if you use a gasket. RTV requires time to cure. A gasket does not have that problem.

@lulkoe2318 3 жыл бұрын

Do I have to spray brake cleaner in the differential

@petrocksgarage 3 жыл бұрын

Its advised so you clean out all the old oil as well as any metal shavings that the magnet did not pick up. Brake cleaner is cheap, so why not use it? Hope that helps.

@illuminaughty2929 Жыл бұрын

Nice work. But you do you you're suppose to loosen the Fill-Bolt before draining it.

@petrocksgarage Жыл бұрын

Thanks a lot. I appreciate it. Correct, if you are worried the fill plug may not come loose due to rust/corrosion/whatever, then yes you should loosen it first before draining the oil and there is no turning back. However, it's more of a precaution than a rule. Some areas have this issue more than others. It's fairly rare for it to be an issue that penetrating lube and/or heat couldn't solve even in places with high rust. But there are always those horror stories on the Interwebs...

@kevindesjadon2569 8 жыл бұрын

is this info the same for a 99 mustang.

@petrocksgarage 8 жыл бұрын

+kevin desjadon, yes. Any vehicle with a Ford 7.5 or 8.8 rear differential.

@5hadyS0Cent 6 жыл бұрын

I recently bought a diff for my 2001 v6 Mustang, its stock 7.5 and 3.27, the new axle comes with an 8.8 and 3.27(Limited Slip.) Is this axle compatible with my v6? Thank you!

@petrocksgarage 6 жыл бұрын

Yes, it should fit. The gear ratio is the important part. If they are the same then it should be a direct bolt on. If not, then you'll need to get the speedometer calibrated. Good luck.

@5hadyS0Cent 6 жыл бұрын

Pet Rock's Garage Thank you Boss, I appreciate the quick response!

@cameronbevan4094 6 жыл бұрын

Would you suggest anti seize on the pan/cover bolts?

@petrocksgarage 6 жыл бұрын

No, I would tighten them down how I show in the video.

@cameronbevan4094 6 жыл бұрын

Ok thank you

@TurboCarlos 7 жыл бұрын

Can we jack up the rear end of the mustang by placing the jack on the bottom of the differential?

@petrocksgarage 7 жыл бұрын

Yes, but only do it to get the car in the air so you can put jack stands underneath. Make sure the jack isn't touching the diff cover otherwise you can warp it. Also make sure to chock the front wheels so the car doesn't roll away from you. Good luck.

@TurboCarlos 7 жыл бұрын

Thanks! Really appreciate it

@petrocksgarage 7 жыл бұрын

No problem.

@jamesaylor2741 9 жыл бұрын

What about using limitied slip additive. I have an 04 and the Ford guys told me to use it. I picked up some from ORielys but it doesnt tell you how much to use.

@petrocksgarage 9 жыл бұрын

james aylor, if your differential is a limited slip differential then you need to add limited slip additive. However, if you have an open differential then you don’t. Check the identification tag on the differential cover to find out. If you don’t have the tag, contact your local Ford dealer’s parts department with your VIN and they should be able to tell you what type of differential you have (if your diff is the stock diff). Typically you add about 8oz of the additive. When you are about to refill the diff, put the additive in first and then the oil until it starts coming out the fill hole. Good luck...

@jamesaylor2741 9 жыл бұрын

Thanks, I'll let you know how it works out.

@petrocksgarage 9 жыл бұрын

Good luck...

@wawaflockaflame1244 8 жыл бұрын

Need your help so I have a 08 stang v6 and I just added a Yukon LSD and motive 3.73 gears but after the break in period it's still whining I used Royal Purple because I've heard great reviews but it still whines I bought the ford racing friction modifier and 2 quarts of Royal purple 75-140 and was gonna do an oil change and see if that friction modifier would do the trick is that a good or bad idea?

@petrocksgarage 8 жыл бұрын

+Nathan Borja, LSD’s require the friction modifier or you’ll burn up the clutch packs. Some oil manufacturers include the modifier in their gear oils. I’m not sure if Royal Purple does. I know Amsoil does, and I think Mobile-1. The wine, however, is most likely an out of spec lash adjustment. You need to properly adjust the lash with the correct shims etc or the gears won’t mesh correctly. Diff gears are not a drop in/bolt on part. An oil change after the break in period is a good idea even if there wasn’t a wining noise. Good luck...

@wawaflockaflame1244 8 жыл бұрын

+Pet Rock's Garage thank you for the info will try that out and let you know how it goes the stang is just sitting now till I find time to work on it by the way awesome name I had a few pet rocks while in the corps ahahah

@petrocksgarage 8 жыл бұрын

+Nathan Borja, good luck with the diff. Yeah, Pet Rock is one of the kinder nicknames I’ve had since high school. It just kind of stuck.

@ComptonBmx310 7 жыл бұрын

Nathan Borja Semper fi

@roadstar499 6 жыл бұрын

Can you tell me how many miles were on that diff? And was it making a whining noise during excelleration? I am going to change my 1994 gt diff fluid today...thanks for the great information...

@petrocksgarage 6 жыл бұрын

I'm not entirely sure. Its been a while since I did this service. It was somewhere between 170k & 180k miles I think. No it was not making a whining noise. If yours is that is typically due to the diff backlash being out of adjustment. Good luck.

@roadstar499 6 жыл бұрын

Pet Rock's Garage are there videos that explain how to fix this? Can it be done leaving diff on car? Any special tools? And its more like a hum when excellerating and not real loud...not sure its necessary or critical. ...dont drive car much.. cost?,time.? Ps i am a pretty good dyi guy,but not a professional tech thanks

@petrocksgarage 6 жыл бұрын

There are a bunch of videos about how to set the backlash on a diff. It can be done with the diff on the car. Yes, there are special tools and it's a time consuming, trial & error, type operation. Not a novice job by any means. Its super easy to mess up and expensive to fix if you get it wrong. If the backlash is the problem, it is honestly worth taking it into a shop and having it done. Seriously. Alternatively, if it is a hum it could be your tire tread is out of round or not inflated properly. You can rule that out by rotating your tires fronts to back & backs to front and see if the sound stops or changes. or it could be a bad axle bearing or bad bearing in the diff. I have a video on how to change the axle bearings & spider gears in the diff, but not one on the bearings inside the diff. btw, I'm assuming you checked for play in the spider gears like I show in the video when you had the cover off because they too could cause noise but mostly when turning.

@roadstar499 6 жыл бұрын

Pet Rock's Garage definitely not tires,but could be a bearing or any other diff issue...need to drive it today and take it to my friends shop and get his opinion on if it'd worth tearing appart or not...thanks for all your suggestions....

@petrocksgarage 6 жыл бұрын

No problem. Noise issues in diffs can sometimes be a P.I.T.A. to diagnose. Good luck.

@mrjr5076 7 жыл бұрын

So no torque specs required for the cover if gasket maker is used?

@petrocksgarage 7 жыл бұрын

No, not really. You want to tighten it down till it starts to squish out like I show in the video. Once it dries you can snug them down again a little if you like (1/4 to 1/2 turn). Don't crank down on them though or you could warp the pan. The RTV tube should have similar instructions, I will default to the instructions on the tube though. Most RTV takes 24 hours to cure to a point where you can put fluid in the diff. Permatex Right Stuff has a lot shorter cure time, for example. Good luck.

@mrjr5076 7 жыл бұрын

Pet Rock's Garage thank you, very helpful.

@petrocksgarage 7 жыл бұрын

no problem.

@johngraham4157 4 жыл бұрын

damn,I forgot tospray brake cleaner in the and aroungd the gears and spiders,now i get to loosen up my pan and start over????and i could not find my drain plug eithrthamks now i caaboes it rite,

@petrocksgarage 4 жыл бұрын

Unless your old oil was full of metal particles or you also forgot to clean the magnet, I wouldn't worry about forgetting to spray brake cleaner inside the housing. Just make sure to do it next time. These diffs don't come with drain plugs from the factory. You have to remove the pan to drain the oil out or install a pan with a drain plug built in. Hope that helps.

@jimpie231 5 жыл бұрын

Is this a posi rear end? I didn’t see and additive added.......thanks. Jim

@petrocksgarage 5 жыл бұрын

No, its an Open Diff. So no additive needed. If your diff is posi then add the additive first and then fill with fluid till it comes out the fill hole.

@jimpie231 5 жыл бұрын

Thanks....Jim

@petrocksgarage 5 жыл бұрын

no problem.

@rickycantu519 3 жыл бұрын

no friction additive??

@petrocksgarage 3 жыл бұрын

Not in an open diff like this one. You only need friction additive/modifier if you have a Limited Slip Differential (LSD).

@transporter83 7 жыл бұрын

2007 Mustang GT come with a 7.5 or a 8.8 rear differential?

@petrocksgarage 7 жыл бұрын

I'm pretty sure its an 8.8 since it's a GT. If you don't have the info tag on the one of the bolts on the diff cover, you can call your local Ford Dealer's parts department, give them your VIN and they should be able to tell you what it came from the factory with. Otherwise you could just measure the ring gear inside the diff case. If its diameter is 8.8" then it's an 8.8 diff. Good luck.

@transporter83 7 жыл бұрын

Hey thanks for the quick answer, I just bought my 2007 GT with 60,000 Miles and i'm wondering all the maintenance I have to do. I have a small leak on the differential and I wanted to understand the most before servicing it, even buying the fluids necessary to do so before hand (SAE 75W-140?/friction modifier). Also was thinking on buying a new cover differential (chrome) since includes the new gasket.

@petrocksgarage 7 жыл бұрын

Congrats on the new (to you) ride. 60k miles is barely broken in, IMO. I would change all the fluids (engine, tranny, diff & brake fluid). You don't know if they were ever changed by the previous owner. Change the diff cover if you want, but no-one is going to ever see it unless you get air going over a hill or something. Also, gaskets are super cheap on their own. Use whatever fluids your owners manual says to use. Your choice on synthetic vs regular oil. I typically go with synthetics. You only need friction modifier if you have a Limited Slip Differential. You can tell if you do with the rear off the ground. Spin one of the tires. If the opposite side tire spins the same direction you have an LSD. If it spins the opposite direction you have an Open differential, which doesn't need friction modifier. Good luck.

@transporter83 7 жыл бұрын

Hey! I'm back :) , just watched your video again to refresh the procedure since I attempted to change the fluid tomorrow, today I'd removing the differential cover, cleaning the gears with brake cleaner, and so on... I was rechecking where and how to put the fluid, I don't have the adapter you used so I'm guessing I need to come up with something tomorrow, any suggestions? also I place a new chrome cover, this one came with a gasket, since I saw you didn't use any I was wondering if it was really necessary? I placed it any ways, I't was strange to see this gasket for me because it was really flexible, not like other gasket I've seen for other parts that are made of metal and are very rigid and strong. I also forgot to clean the cap that helps release the gas and temperature from the inside of differential, I will sure do that tomorrow. Thanks again for this video, please let me know any comment or recommendation you think appropriate.

@petrocksgarage 7 жыл бұрын

You can pick up a pump like the one I used at your local auto parts store for under $10. I recently picked up a new one at AutoZone, but others should have it too. As for the gasket, you can use one if you want. It came from the factory with RTV, but you can use either one. Definitely clean the air vent cap on the axle tube sooner rather then later. You don't want pressure to build up in the diff and blow out a gasket causing a leak.

@Volkswageneer1990 7 жыл бұрын

What fluid did you use?

@petrocksgarage 7 жыл бұрын

The manufacturer doesn't really matter. What matters is that it meets/exceeds the specs for the oil your owners manual says to use. I use 75W-90 synthetic gear oil. Hope that helps.

@ulisesc4388 4 жыл бұрын

Would ultra grey max torque work? And pouring by the bottle?

@petrocksgarage 4 жыл бұрын

Yes, ultra grey should work. I'm not sure what you mean by "pouring by the bottle". You keep filling until oil starts coming out the filler hole. You will most likely have some left over oil in the bottle when you're done.

@ulisesc4388 4 жыл бұрын

@@petrocksgarage just wondering if there was enough room to pour in with the quart bottle or do i need a pump

@petrocksgarage 4 жыл бұрын

@@ulisesc4388, there isn't a lot of room under there. If you jack up the car and let the rear diff hang you will get some more room but it will be a P.I.T.A. It is much easier with a pump. Pump adapters for bottles are pretty cheap and available at most auto parts stores. Good luck.

@ulisesc4388 4 жыл бұрын

@@petrocksgarage thanks for this information sir! Will look around.

@petrocksgarage 4 жыл бұрын

@@ulisesc4388, no problem. Good luck.

@cameronbevan4094 6 жыл бұрын

Sorry to bother you, but I'm changing manual 5 speed transmission fluid out of my 2002 mustang. Auto parts store said use A.T.F. where my father said use differential fluid. Which one would you suggest?

@petrocksgarage 6 жыл бұрын

No problem. Go by whatever fluid your owners manual says to use. Differential fluid sounds too thick, IMO. Good luck.

@cameronbevan4094 6 жыл бұрын

Pet Rock's Garage ok...yeah, I don't have the owner manual. But AutoZone said A.T.F. My dad laughed and said you'll burn your car up. Lol...so yeah. I'll check into it...thanks

@petrocksgarage 6 жыл бұрын

You can download the owners manual here: owner.ford.com/tools/account/how-tos/owner-manuals-search-results.html?make=Ford&model=Mustang&year=2002 It says to use ATF fluid with MERCON, which isn't the same as ATF with MERCON V. That is assuming your car has the stock (T5?) manual transmission in it of course. Good luck.

@cameronbevan4094 6 жыл бұрын

Pet Rock's Garage thank you again

@petrocksgarage 6 жыл бұрын

No problem. Enjoy your new (to you) ride. You treat it right and it will do the same to you.

@dan3428 9 жыл бұрын

i was wondering what that rusty rotted away piece of sheet metal was hanging off my 8.8 inch diff. cover. no use for it now

@petrocksgarage 9 жыл бұрын

daniel griffin, yeah, its the Diff ID tag to tell you what size & ratio of gears are inside your differential. It’s pretty important if you need to buy parts to service it. There are a bunch of different gear combo’s for 7.5 & 8.8 differentials.

@dan3428 9 жыл бұрын

seems pretty important. it's too bad mine is rusted and un readable. do you know of any other place i could find that information?

@petrocksgarage 9 жыл бұрын

daniel griffin, if your diff & gears are still stock you could contact your local Ford dealer’s parts department and ask them to look up the diff specs via your VIN. They would likely be able to order you one once you have that info. Good luck...

@dan3428 9 жыл бұрын

good to know thank you.

@petrocksgarage 9 жыл бұрын

daniel griffin, no problem

@Adam-qr4jj 7 жыл бұрын

How many miles did this mustang have?

@petrocksgarage 7 жыл бұрын

I don't remember exactly how many, but it was over 150k at least. Its now around 190k and still running strong.

@Adam-qr4jj 7 жыл бұрын

Cool thanks for the response, just picked up a 95 Gt with 60k

@petrocksgarage 7 жыл бұрын

Congrats. That car is barely broken in. Enjoy the new (to you) ride.

@Adam-qr4jj 7 жыл бұрын

Thanks man!

@uaeoouae 7 жыл бұрын

thanks you

@petrocksgarage 7 жыл бұрын

no problem.

@60pablos Жыл бұрын

80/90?..no 75/140w ??

@petrocksgarage Жыл бұрын

I assume you are asking about diff fluid. 75w-90 or 75w-140 will do just fine. I use 75w-90. In the end, use whatever fluid type is specified in your owners manual.

@caljohn88 8 жыл бұрын

Wow if that permatex gasket remover rusted the can then I would be very wary of putting it on any of my metal surfaces.

@petrocksgarage 8 жыл бұрын

+caljohn88, if you clean off the metal surfaces with brake cleaner after using the gasket remover you will be fine. It will only rust up if you leave it on the metal surface for an extended period of time. So be careful what you spray it on.

@cameronbevan4094 6 жыл бұрын

And the magnet just sits there???

@petrocksgarage 6 жыл бұрын

Yup. It holds itself in place on the metal diff housing because its a magnet.

@cameronbevan4094 6 жыл бұрын

Ok, I take it it catches shavings

@petrocksgarage 6 жыл бұрын

Yes.

@tylerbailey3132 7 жыл бұрын

Bruh you sound like Rick from Rick and Morty, just less drunk.

@petrocksgarage 7 жыл бұрын

Nah, Bruh, his voice is much more scratchy & higher pitch then mine.

@ComptonBmx310 7 жыл бұрын

Jake Mchate I thought the same thing

@Ihacksthisll 6 жыл бұрын

Tyler Bailey yooo ikr!!!

@lafisga8618 6 жыл бұрын

A lil parts he sounds like it... but its mainly the flow of speech sounds similar to ricks lol

@alektad 6 жыл бұрын

Not at all, he sounds like AvE

@rifle360able 7 жыл бұрын

rtb is crap I know the gaskets are hard to find for the Rangers as ford doesn't make a direct replacement but they aren't impossible to find if you order a new cover the gasket comes with it

@petrocksgarage 7 жыл бұрын

RTV isn't that bad. Its just annoying to work with. But yes, if you prefer & can find a gasket by all means use it.