Reply to "Opinions (of better, facts) on Valvoline oil additives"

callisaMember

Well, why use an oil additive? If you buy a proper formulated oil, you don't need any further additives. You may even spoil the oil's additive package and create new problems.

There is more than one engine manufacturer claiming that warranty will void if additional oil additives are used. If you look deeper into additive chemistry, you know why.

8/3/0411:29 AM

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