Always take out the fill plug first

Outstanding video and I thank you! Sitting at the dealership getting my regular oil change and tire rotation. Service advisor informed me my Gladiator service schedule recommends 15k miles diff oil changes. $425.86. Well, being im at the dealer, and this is my first Jeep. i felt the investment was worth it on my 60k Mojave... I will certainly be doing it myself with what I learned from your video. Very much appreciated, Sir. 2022 Jeep JT Mojave, Sting Grey.

Great video. Clearly QA issues. I changed out at 21k for rear and only some gunk on the drain plug but the oil looked great...not even black. And I off-road quite a bit.

here I thought me doing mine at 25k was too early :) joking asside mine was much clearer but there were some magneric particles. I opted for 75/140 for rhe rear since I tow a 4k lb travel trailed several thousand miles a year. Just hit 35k in my 2020 JT-R and so far nothing other than routine maintenance needed thankfully

I’d take the fill plug off first. If you drain it and can’t get the full plug off then you’re screwed.

Good stuff. Just did mine at 33K.

Crazy, just did the rear on my 2020 max tow non-trakloc at 67k. 😂 Not even close to what your front end had for metal shavings on the plug. Dark golden brown, definitely cooked and causing some drag and a little slap, now that I know what fresh oil feels like, but still kinda clear and definitely not a metal slurry like you had. Not really even a metal sheen. My transfer case had more metal sheen, but less metal on the plug. I’m curious as to what all that metal you guys are getting is from. I’ve got only maybe 100 miles off road, nothing too crazy, no mud or deep water and about 400 miles towing a 6500lbs travel trailer. But yeah, prolly should have done it sooner, but it probably would have blown up or gummed up by now if it was like yours. Do you have an update? Feeling like you should by now. I’d probably do it again in every 1k til it was clear, then in 5k, then in 10k, 15k, etc. Find out how long the fluid will hold up, and if you got a real issue on your hands. You can also take some fresh fluid with only the fill off, sticking the hose as deep as you can and making the used fluid overflow, and gauging from that, whether you need to do a fluid swap. I’m probably gonna do mine again in 10k just to see how things look. Anyways, thanks for the video!

Great video! Any reason you didn’t go with squeeze packs. S pump and bottle?

Man, that fluid definitely has water in it. I saw another video and his truck had over 30k miles. His diff oil was brown.

Did you add limited slip additive? Mopar LS additive (2.3 oz) is required for electronic LS.

No drain plugs in the newer JLs and JTs.

Why use 90 weight vs the 85 recommended in the owners manual?

of course the front diff is cleaner, the diff gears dont spin unless you are in 4wd because of the FAD

Are you serious, after 6k I need to replace rear oil? 😊

What year model is yours? My '21 Mojave doesn't have the front drain plug.

You should always remove or loosen the drain plug first so you know you can refill the axles

Sure was a lot of metal and crap in there, it’s expensive but I would change again in 5,000 miles and keep and eye on it

I doubt the oil in the rear axle was "dirty," especially after only a few thousand miles. It looks to me that the OEM oil in there may have been a "break-in" (for lack of a better term) molly-paste (molybdenum) gear oil which gives it a gray color, which might be interpreted as dirty-looking but in reality, it's still very clean/new. Only a chemical analysis of the oil would show its true state ("dirty" or not), so I'm guessing it wasn't dirty at all. But I'm no expert mechanic, just have seen molly in a differential before, so I mention it here just in case that's what happened. Whatever, I'll be leaving both differentials/final drives of my Gladiator alone until at around 30K miles (unless the dash-maintenance-info says differently), when I also usually do (and also way before it's required, whenever Jeep says it's due) a transmission oil change (not a flush), brake fluid flush/refill, power-steering change/refill and possibly a coolant flush/refill as well. However, it won't be because I put a lot of miles on my truck though, it's because it'll take me maybe 4 years to get to 30K miles...so oil/fluids that have been in there that long I just feel better about changing them out even though they probably could stay in there way longer. Not sure when Jeep says the Gladiator's differentials DO need their oils changed (my Honda Pilot had a dash "Maintenance Minder" that would give a code to change the differential oil when it was due), but I'm not even up to 8K miles yet (10 months of vehicle ownership) so I have plenty of time to find that out. "Jeep Wave" -- BR (2021 Jeep Gladiator Rubicon)

The Jeep stealership quotes over $250 per differential for this job.