You're not buying the smell, you are buying it's stop-leak ability. I just used this on my old car yesterday and today there is no more oil leak .

Today put in a bottle of the new stuff in my 1998 Subaru with 235,000 miles for the weepy rear main seal. Doesn't leak enough to need to add oil between 3,000 mile changes but leaks on the exhaust and gets stinky. Never tried this so will see what happens? Update it's a couple of weeks later and it seems to be working. Yay

Man I thought we lost you Switz. Glad you're still creating content. I would call the Manufacturer and ask them what changed with formulation and advise them that it is not working like the previous formulation. Makes you wonder why they changed it?

Even with the newer non-smell updated formula, it would be good for a "test Update" on it's ability to stop leaks in cars & trucks oil leaks. I used this newer formula on our '15 X5 in the rear differential about 4-5 months ago. The rear pinion seal started to leak after I did a R&R on the diff fluid at approx 86,000 miles. (I don't understand why this leak started after the change of fluid. I used a good grade "Redline" GL5 fluid that Redline said would work) Anyway, I put in (1) ounce of AT205, topped off the fluid level, and cleaned all the leaked gear oil off the diff with brake cleaner, and the leak stopped withing a couple days. It's my understanding that that this AT205 just has an additive that "softens & swells" old seals. Maybe it's been modified a little to meet EPA requirements, but it still has the Diethylene glycol monoethyl ether greater than >90%, as shown on their MSDS sheet dated 24-May-2021. Thanks for your video.

So now AT 205 Reseal is charging double the price and it doesn't work as well. Well, i guess they shot themselves in the foot because bad news travels fast.

Dang. Now that I think about it, the bottle I got a few years back doesn't have a pungent smell to it either. That was the first and only bottle of AT-205 I've purchased (because I haven't even used the entire bottle yet). Glad you made this video. I'll keep the info you shared in mind when using the product. It's one thing if they reformulated it to eliminate the smell due to customer complaints, but if it doesn't work as well either, that worries me.

Been using it for years with no complaints from me. I just put a bottle in my trans and split a bottle between the rear diff and the power steering...all 3 stopped leaking within 2 days.

The bottle i put in last month with VR1 20w50 slowed the rear main seal leak to about half the amount but did not stop it like all the old reviews i read.

Thanks for this information I just ordered a bottle of this for my motorcycle hopefully it seals up my oil leak

Will be disappointed if it is not as good. I did just put a bottle of the new stuff in my 1999 Honda Accord. Great car with 318000 miles but I found the pcv valve was stuck (my bad. Should have replaced about three times) and I think that started rear seal leak. I was losing about 1/2 cup of oil per day. Aft a 30 minute drive, i see about 15 drops. Much inproved! Will see after the recommended 5 hours. So far, it seems to work still.

I added AT-205 to my 76 VW Bus camper. I''ve had it at 3 top classic car mechanics and they all say it's in great condition accept for the slight oil leak. Well, It's defiantly leaking a quarter size drip a day. So I put in the 205. 5 hundred miles later it's still leaking. Can I ADD more 205?. Will it be bad for the engine to add more ?. No one says that it's a major issue but the Bus still leaks with the 205. What should I do now?. Is another bottle going to hurt the engine. ? Reply

Switz have you compared it to Lubegaurds Seal Fixx? I saw someone mention it here and saw Scotty K use Seal Fixx when AT 205 when off the market before reformulating. Thoughts on seal fixx as a better alternative? Thanks!

Hi, I have a bold idea. If tolerance is simply the weakening of the drug effect, can we double the dosage to achieve the previous effect? (It's just a casual idea; please do not attempt without proper consultation...)

Great video, is there any word on how often to use AT205? TY

Seems to work just fine in the applications I have used it in. I don’t care what it smells like. But does it work

Hi, thanks for the information. Is this product DPF compatible? Thanks Eddie

The smell you describe sounds like methanol. See if the old bottle list it as an ingredient, perhaps they deleted it. That's the first thing you discard when making whiskey but it indeed does smell similar to nail polish remover.

Still seems to work though. Put it in my mother-in-law's Civic and stopped the oil leak immediately.

Shrinkflashion is happening in our car chemistry too!

I used this in my power steering pump and my power steering leak stopped about 98%, I only used about an once if that, I also spray my bushing with it...

That "nail polish remover" smell is "usually" acetone.. Acetone is not good for rubber and can actually "eat through" the material.. So, maybe it was effective in making the seals softer and expand more, but long term it may be weakening the rubber..

It works the same or better

The old stuff is sometimes better. My parents have a couch that has cushions that are in good condition even after 40 years. The only bad thing is that in a fire, it is worse than napalm.

I used this in my car 3 days ago and been driving. Have you heard of anyone mentioning there lifters were ticking on a cold start!?? Whats up with that? My lifters never ticked and I hope this will go away after driving more miles or with an oil change. I assume the solution is sticking to my lifters as it would to rubber seals.

So what can we do , is there any other products

You can thank all the green loving, tree huggers for screwing up the product. I am not sure about the component change, but it must be acetone.

Hey I have a fairly new car 2015 Toyota Venza 84000 miles. It’s an extremely small rear main seal leak. I was saw a drop every time I drive. Would 205 stop this and be safe for this type of engine

I tried some...didn't work at all. tried it in July 2022, no changes in small leak.

Does it have a expiration date smell??? Lol

WD-40 pulled the same stunt I had an old can and a compared to a newer can of WD-40 two totally different products the old stuff actually worked and stayed there for a while the new WD-40 evaporates after. 24 hours...

Damn how can you huy the old school at205 at????

Put this in my Silverado 150K miles - perfect…70 mile drive - serious oil leak sealed…

If the bottle doesn't have the nail polish smell..... could I add maybe eighth to quarter ounce of acetone maybe??? Thinking about it.... 🙄

This is sure some scientific study. If you are going for the smell then just use your wife nail polish remover.

Woww to bad I won't be buying it no longer.

New and improved equals lower quality and worse outcomes. My guess is that it is now more profitable. Maybe car manufacturers have paid off the company to degrade this new version to make it less effective.

Ok it's different now but how do you know it's not a better improved formula now?

It’s a smelling test😂

if its not broke, don't fix it... why would they change it... soo sad

How does it taste? 🤣

I went to smell it, a little went up my nose, a lil worried about cancer but my nose hasn't dripped ever since. Suggestion... what you were used to was actually rancid product that was warehoused until they could find a buyout company. You may have been using 10 year old product. Sorry bro, I don't trust your methods and experience. If its just a solvent missing, there are many many alternatives. I suggest that if the formula changed that the original high potency solvents may have worked well w dirtier engines, cutting thru grime and facilitating a raw bond of product to seal. Maybe this "new" formula is sufficient for cleaner engines? Do an oil change first. Also, I wouldn't worry too much about companies making greener formulas that aren't as effective, it hits home when you bury someone who died of chemical caused cancer. Believe me. I'm ok to avoid cancer and thank any company for formulating away from causing health defects. It happens w body building products a lot. Noone knows why a product dissapears, they know it worked better than the rest short term. Yet, cancer takes longer to express than it takes a stop leak to work. Dirty oil itself is cancer causing. Compounding carcenogens is not the answer. That said, I'm gonna use the stuff. Still a new car is cheaper than treating cancer (for most of us.)

I use "SEAL FIXX"... It works just like the old AT 205 Reseal for less money.