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Re: Will lack of zinc in oil destroy older engines?
Posted to Technical Theory Forum on 9/9/2007 12 Replies

"For a GM ASEP instructer, GM 6094M, 4718M, LL-A-25 and LL-B-25 are the essential oil service ratings that every GM tech should understand."

Where would one find information on this?

And - would you agree with example - the GM-LL-A-025 standard for gasolin... Login to read more.

12 Replies Received (View Replies)