I've been using this product ever since my rear main oil seal on my 1999 subaru forester started leaking. The leak was bad as it would leave oil drops on the ground after sitting over night. My car doesn't do this anymore since I started using this product a few years ago in 10w/40 grade oil.
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Be careful with cheap additives. If you have a simple leak somewhere else address it. Or you will regret it like me. Now my headgaskets leaks an exhaust blows thick white smoke after adding this with the right oil an %. It has clearly worn every engine seal now.
Verified purchase: Yes | Condition: New
I was under the impression it would stop the oil leak has slowed it down but not stopped it used to smoke a little only smokes on start up now suppose that's good not that happy with it can not complain about the service very professional and quick but the product not what its suppose to do UNSATISFIED CUSTOMER.
Verified purchase: Yes | Condition: New
Has reduced oil leaks and just about eliminated exhaust smoke in my little Vitara, worth trying in an older engine.
Verified purchase: Yes | Condition: New
Seems working for my engine. Still need longer time to make sure
Verified purchase: Yes | Condition: New
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