Permatex 30300 Head Gasket Repair - Multi-Purpose Stop-Leak, 16 fl. Oz, Seals Head Gaskets While Preventing Future Leaks

I've tried many other oil leak sealers over the years for automobile engines, but this one actually works. Funny thing is, that immediately after I added it to my 2002 2.4L LD9 engine, the motor suddenly ran smoother and quieter than it ever has! Other people noticed, too. I there magic involved here somehow??? 1,000 miles later, it's still doing everything and more than is claimed on the label. And it sosts less than most.

Working for me.

My grand daughter borrowed my old 1989 chevy one ton garden truck😖 Lost serpentine belt - Her boy friend said it would be ok to drive it 18 miles back home. It has a blown head gasket- Do to the ago of truck all garage shops said scrape it. Installed the Permatex- The old girl is working Just fine. strongly recommend this product

This product should be banned from Amazon. We used it according to the instructions and it ruined our car, it blocked the engine and now it can’t go over 40 miles. 17 dollars that cost us a fortune

I had the gaskets replaced around 4 months ago and my engine is dripping little oil, tried the treatment, ran for 300 miles, then again for 100 checked oil and was low again, Its not big leak, but after a week you can notice a small puddle in the driveway. Burnt oil smell went away Maybe a second bottle is needed. Keeping my hopes up. Dont want to dismantle the whole engine to find a gasket that was incorrectly seated.

Have not tried it yet but being a waterbased coatings chemist I think it may be the best product available to accomplish the job on engines with small head gasket leak. The price is too high thou for the risk!

Easy to use. No clogging. Works great. I was seeing a lot of white smoke and having to top off my antifreeze before using it. Now there's no smoke and my antifreeze hasn't had to be topped off since. I wish it was cheaper, but it's a lot cheaper and easier than replacing a head gasket.

Great transaction but the product did not solve my issue? Guess it's just too big of an issue that these products can handle? Fast shipping and hey? It may work for you. It is a nice product so can't fault them.