Lucas Oil 10278 Engine Stop Leak, 946 ml

Did exactly what it said it would, cured an oil leak on a combine.

Very effectively stopped a worn engine from consuming lots of oil. Very happy.

I was expecting very little from an "magic oil stop leak" product but it's actually not terrible. The bottle itself looks terrible and the instructions are....... ropey at best but it does genueinely seem to have reduced my oil burning. My valve seals have been letting oil past ever since I got my car but they are letting noticibly less oil though now. It's not a miricle fix, but it has made a difference, so for £15 I am happy to recommend this.

Great product

I had a major leak, added 1 liter to 3 liter oil , It changes the sound of engine it is smoother now, I am really surprised.It didnt help with the leak though. I don't know what could be the long term consequences but for the beginning I am happywith it.

Slowed a leak on my Mini but never stopped it, but with a Mini oil leaks are part of it charm...I'm told. Buy this but never buy a Mini🤣

Good quality item

Saved me about 10 grand

Mix in juiste ratio

واو كان لزوجة جيدة

I've used Lucas Oil products for years and swear by them. I just recently bought a 1997 Dodge Ram 2500 HD with a Cummins diesel and the mechanic I took it to for an inspection told me the engine had multiple leaks (didn't specify their severity). I just did my first oil change and substituted 2 quarts of oil for the Lucas Engine Stop leak and the engine is loving it. I will deep clean the engine and see if there's an improvement with the leaks. In future oil change I will substitute 1 quart of oil for this product as recommended by Lucas.

Works great

This product has been negatively reviewed far too many times, and I felt compelled to write a review on it. I have used this product on 3 cars with oil leaks, and my family has used it on their cars as well. My family has had great success with minor oil leaks, and 2 of my 3 cars I have used this on resulted in their oil leaks ceasing completely. My other car turned out to be a decent sized crack in my oil pan gasket, which explains why throwing some Stop Leak at it didn't solve my issue. This product helps greatly to repair old, hardened seals, but it doesn't falsely advertise to bring about miraculous results in moderate to major issues. My point is, this product works extremely well for it's intended purposes, and I feel that all of the negative reviews should be taken with an grain of salt. It would be spectacular to hear, from the negative reviewers, what sort of issues ended up being diagnosed in the cars this product didn't help. I'm by no means trying to put down the negative reviewers, but it does get a bit frustrating reading reviews on Amazon like "Put it in my car, didn't work, still leaking, crap product" or "I contracted a flesh-eating bacteria, and this 'highly rated' Neosporin didn't work. Don't waste your time. 1 star. Booooooo!!!!" Lucas Stop Leak is a great product for it's intended purposes, has been used and trusted by amateur and professional mechanics for years, and fully deserves a solid 5 stars.