AT-205 contains a similar ester that is used in ‘High Mileage Engine Oil’ for the same purpose. I have successfully used this product in engine oil, transmission and power steering fluid. Have some in a spray bottle for rubber suspension bushings and boots. It has stopped leaks and squeaks for me in all applications! Great stuff.

I poured a bottle of AT 205 in my 2000 Mercedes E 430 about a year ago for a rear main seal leak that was dripping oil on my driveway. It cleared up most if not all of the leaking. I think it works by "plumping up" the rubber in the seal, which effectively accomplishes the same thing as installing a new seal. Saved me about $1,200, so I would recommend it. Just make sure not to overfill the crankcase.

I have my second Jag and they are easy to take care of...Preventative maintenance is key. Main issues are the same, water cooler, fuel pump failure...Anything electric, first culprit will be the battery so get a bigger battery than needed. Along as you regularly change oil, you'll enjoy that, Jag. I DIY all my repairs, mods and upgrades. Just changed my oil, oil filter, oil sump gasket on my Jag Xf R and but still used the AT 205 even though i have no leaks...Good video

I used this on a 2004 Chevy Cavalier with a 2.2 eco tech engine. This engine had bad valve seals which caused a little smoke occasionally on acceleration plus the 200k mile engine had minor oil leaks. I added with a fresh oil change. After a few days the smoke stopped and no more oil leaks. That was over a year ago. Well worth it on an old beater car for sure!

Made my seals around my ohc on my civic leak. But I sprayed it on all of my bushings and it definitely helped wore out dry bushings.

The best way to deal with a Jaguar maintenance problem is to avoid buying a Jaguar.

I saw your video on using 205 product and I had a customer 2003 5.9 dodge ram van with a leaking rear main seal and it was 2 quarts low in oil so I open each quarts and pour half of into the engine and bought 2 bottles of the 205 and I added 1 bottle of the 205 to each quart of oil and shook it up and with the engine running I added to the motor and let it run for a hour the leaking stop and hasn't returned I'm a mechanic of 40 + yrs and this is the best product I've ever used .ken's automotive God bless you

It works for transmissions and gear boxes as well.

It worked for me, got three years out of it, well worth the try.

I have a 2016 JK with a rear main seal leak I change my oil and put in a bottle of this product within 2500 miles the leak has all but completely stopped my jeep made a mess wherever I parked it and now there is no reason for me to make the repair I highly recommend this product it save me about $1000 at least for now maybe one day it’ll start leaking again but every time I change my oil I will be adding this absolutely amazing and I highly recommend it

Awesome review and don’t forget to add the AT-205 every oil change to keep the leak away! Congrats

Just put a bottle in with an oil change on my 2005 Corolla; NO MORE LEAKS ON GARAGE FLOOR!!! This product works!

Glad I found this video cause I was cautious of putting it in my vehicle. I think I’m now convinced. Thanks for the video.

This product is great for preserving rubber components.

Nice garage so much space. I'm going to try this stuff on a CLS55 with a slow rear main seal leak.

It is a brilliant product, I just wish we could buy it off the shelf here in Australia! I've used this on my wifes toyota corolla,it stopped the gearbox oil leak for good.

Thanks Dude!! I have an '05 X-Type, 76k miles. I'll give it a try. However, I like the Bentley and love your comment about not trying this product on it!!! lol lol

I used this on a Mazda that had a main seal leak and it stopped the leak. It worked for me.

ATG, SAS, Scott Kilmer & experts like this product. You have no problem putting it into your Bentley. I used it on mine & my uncle's 959

No guarantee it will work but cheap enough to try. I add 1/3rd of the maximum dose to each oil change as preventative maintenance.

Thanks for taking the time to produce& and share this vid', and 'real world' findings 🙂 Acquired 4 units of it. Will be using single unit(s) on the '82 Ford F100 V6 3.8L M30T & the '96 GMC Sierra V8 K1500 . Btw, 6 u.s. quarts = 5.68 litres ;-)

I saw Scotty kilmar mentioned this product .. it's great I just bought one . Good for rubber re seal too

This product is fine to use in expensive cars it won’t hurt them! If it does not fix the problem your in the same boat of repairs! Just FYI

Nice video and thanks! I also realized from your replies to comments that the leak is back and my guess was that you could have used the car for 5hrs straight, after pouring in the AT-205 Re-Seal.

love the jag x type

Thanks!

Dealership told me they wanted 3 grand to fix my oil pan seal in My GTO. I told them they were high AF. Used AT 205. Leak gone!

Scotty Kilmer suggests you spray it on your suspension.

ive used it several times on diff cars....worked great every time!

I wonder how many used car kits stockpile this stuff. Glad it worked out. Keep us posted.

I used this in my 2001 Suburban and it worked as well. I had a rear main seal leaking, mechanic quoted me $800+ to fix. I searched up leak sealers, found this stuff and it worked as advertised!

this stuff is awesome if you have noisey a-frame bushings. i do know that it takes time for the rubber to expand in the way i use it. then it works for a long time

Im getting some of the AT205 for my old 1995 Land Rover Disco ,it will be interesting to see

Had my oil changed in my 2008 Toyota Sequoia Limited with over 210,000 miles the other day at Toyota and they said my rear main seal was leaking,$3680 fix,thats definitely not happening,I'll let my personal mechanic look at it and see what he says,I'll most likely be giving this stuff a try,really good video my man 🙏🏾

Wife's company owns a Jag. The file folder of repair receipts is 3 inches thick.

Works thumbs up

Hi i tried this on my 25 year old Seat TDI (VAG) gearbox engine seal went and it works.. but you need to add just a little of it at each oil change just 3 or 4 caps

Tried this in my 1986 carver 32' boat transmission, 2 years ago still no leaks, just put some in my starboard transmission yestrday

It would have helped to show oil dipstick levels before and after. You may have less oil leaking because you have less oil to leak... but nice vid. I'll try it in my old Rav4.

Thanks for a good review!!

From my own experience most of the top end rubber seals (cam adjuster seal, spark plug tube seals) on my audi 3.2 were leaking oil and brittle plastic when replaced, had to be picked out in small pieces brittle. Audi engines run absurdly hot under normal use and if i knew the limited longevity of the seals I would of considered adding the occasional additive with rubber plasticiser well in advanced, including gear boxes and differentials. Contrary to not adding it to the car you love I would recommend it. High millage oils already contain seal conditioners and o-ring lubricants promote swelling for proper seating right at the installation. Seal conditioners for rubber swelling is nothing new or something to be fearful, you just dont want to use incompatible chemicals that deteriorate rubber.

My beater is a Jag. That's fricken hilarious dude. Thanks for the review though, very helpful.

i putthis in my grand prix , my car has more compression and runs great .a lot better than before.as for the leak i had was on the oil send relay it did not stop that leak as i replaces that sender unit..

This solved a minor oil leak on an Acura MDX rear main seal. Also a cam shaft seal leak(bad one) on a Honda civic which was very old and high mileage.

Hi Thank you for all your wonderful videos, they help a lot to a lot of people (including me). I would like to ask you: Is this product good when the car has a little blue smoke from time to time? So can I put it in the engine? or you have another product to suggest.Thanks again.

Thanks for the video. Please clarify how to tell if your oil pan is "coated in rubberized plastic". I own a 2001 XK8. The oil pan looks metal from underneath. Thanks!

AT 205 used to be sold in an aerosol spray as well and the purpose was to saturate all the rubber parts of your suspension underneith the vehicle. More specifically the parts of your susension located nearest to each tire. I am thinking of pouring a bottle of this into a spray bottle specifically for my suspension issues. It supposidly rejuvinates rubber parts through absorbsion. Quiets noises of rattles and squeeks and the like along with prolonging the life of the parts be they bushings, seals, boots, or whatever. In other words it makes for a great preventative to deter dry rotting and normal deterioration. The fact that this is the case should indicate how it works in any of its aplications. It rejuvanates the seals where you may have an oil leak as long as the seals in question are not too badly damaged already through deterioration, or suffer from rips, or tears.

Passed down a 2009 Prius to my son. Thinking about recommending AT-205 to pre-empt any seal leaks...

I will try this one to see if it will work

Great video...good talker, my man. you solved the mystery a lot of us, were wondering, ty

Love the stuff for suspension squeaks too. But can't find it anywhere now!!

I used this in my forklift engine that was leaking badly from the main seal. It took about a week, but it finally stopped the leak.

Nice car👍🏼

You have to use this at every oil change or the leak will return. I use this in my 2002 Honda CR-V with 352,000 miles. This is not a sealer per se, but a rubber conditioner that rejuvenates the rubber seals.

I'am Your Newest Subscriber Great Videos . The Chevy Astro Van I Bought Leaks From The Rear Main Seal . I Put Blue Devil Rear Main Sealer In And It Didnt Work At All

Good job Gamecock!

Nice Bentley homie

Your garage is big/tall enough for a hoist!

It depends on how big a leak you have too,it's not going to stop a major fluid leak,it's designed for small leaks and seal reconditioning.

They use this stuff in the Aircraft Industry/Engines, on Rubber Seals, because it works. Think about that the next time you trust your life to an airplane.

Thanks for showing us this experiment. What's the latest update on this as it was carried out in Mar-2020. Thanks

“Oh god !please let this work and not screw something up”! Lmao

Does this work for leaking head gasket or hardened valve seals? .. running a 2006 Swift petrol and on every 1st cold start, tail pipe emits crazy white smoke all over the place for 10 minutes

I put at-205 in my lawn mower and only ran for a few minutes and the leak is still there. So, I will pour the old leaking oil back in until the leak stops. lol

How do you check to make sure your oil pan doesn't have paint?

Used it on a camry cut the leak to 1/10 of what it was. Rear seal used two bottles first one drove it 400 miles still leaked added another than started working.

Hi my tiida transmission leak help this work

What if you don't drive right away after putting it in?

Putting card board under your oil pan is a better than having oil drip on your garage floor.

It's the only thing that add to my vehicle's engine p/s transmission rear end ,transfer case. The best but on the engine you may have to add again at oil change especially when synthetic is used. GREAT PRODUCT. I have sold it for years to Hydraulic shops just any shop that in ground lifts or even 2 or 4 post. By 5gals and 55gal

Worked within 2 hours of driving on my Jeep Wrangler's rear main seal leak.

It is a good product. I had a seal on my tractor i soaked in it. Re installed and it has not leaked. Try to buy the product form the maker and you can't.

Skip to 6:25 min. Guy likes to hear himself talk.

Worked in my 2010 328 xi

Some people say that i must put the product and them drive for at least an hour... is this true? Some people say they had problems because they didnt drive after using the product. So i dont know what to do.. and the box doesnt say anything about moving the car just after using it... can you tell me? Thanks. Btw. Great video

If it can fix a Jaguar it can fix anything nice case study.

I have an 06 gmc yukon with rear main seal leaking..i bought the at-205 re-seal,I just put it in my yukon lets see the results

Will this qualify to help stem valve seals? Thanks

i wonder if you do an oil change if your need to pour a bottle again

How many miles did you have on that jaguar when it started leaking? I just put two bottles of Bars rear main seal stop leak with clean oil in my 2007 Tahoe with 313K miles. The leak was slow and barely noticeable, hope it works. If it does not work i will use the ATP 205.

British Lucas electric....." The prince of darkness" ....My English mechanic friend........

Thanks for your sharing. I am not sure about that: Do you need to re-add AT-205 with every Engine-oil change? Or just one shot to cure the oil leaking?

For how long this additive does it works. Did you had any drops after oil change?

Can I used it to put it in sealer in the cam tower not the gasket the sealer one tundra 2007

Does this also work on the transmission? I can't reach the location its leaking from

I swear by AT-205 !

Hey, great video. Solid information! 8 months after the postage of this video: has the leak reappeared? Or has this product fixed the problem for good?

Stop leak does not work good (or even not at all) with hyper modern rubber seals, the brown and blue ones are Viton or Neoprene seals...they are resistent. Stop seal works best with BUNA (synthetical black rubber seals = NBR) On vintage cars with NBR rubber gaskets most stop leak additives work pretty well.

Would this stop a timing chain cover leak?

I used it on my toilet, the rubber stopper inside was slowly leaking water, let it set overnight dry with this on it and no more leak one year later 🚽

Where do we check if our oil pan is painted or not?

Yup, if you like fluid leaks, buy a jaguar I ordered some to try on a rather bad xmission leak on my DTS. Considering accounts that this stuff can cause the seals to swell excessively I wondered if, if it stops the leak, would it be a good idea, at that point, to drain the fluid and refill w/fresh fluid to prevent any further swelling of the seals. What do you think?

Can I use this on a leaky motorcycle valve cover?

I use this stuff like hot sauce

Does it say to change the oil before and after?

I have a car that doesnt really have any leaks but comsumes/burns oil. Do you think that product would help that?

I have a 05 Toyota Tundra how do you find out if the oil pan is coated in a rubberized plastic???

I have a 2005 Cadillac DTS with the famous North Star engine that starts leaking oil around 65,000 MI. My oil leak is slight but annoying. On my last oil change the mechanic put in 8 quarts of synthetic oil. Now I am leaking a little more oil than with conventional oil. My car is in excellent showroom condition with only $108,000 MI. I am hesitant in putting in the oil stop leak. I asked a couple mechanics what do they think of using the stop leak they said it's like playing Russian roulette if it works fine if it don't work you can ruin your engine. Still thinking it over what to do. One thing I do know is switching back to conventional oil.

My 1979 corvette is leaking from the front seal of the transmission and it’s a bad leak. I’m hoping this will slow the leak down or completely stop it

wow that jaguar was really leaking!