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#10 (permalink)

07-10-2009, 09:21 PM

bobcowan

CC Member

Join Date: Feb 2007

Location: Colorado Springs, CO

Cobra Make, Engine: Backdraft, supercharged Coyote

Posts: 2,455

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Quote:

Originally Posted by jwd

For break in, use a CI-4 or CJ-4 rated oil with 1 bottle of GM EOS. After that, just use CI-4 or CJ-4 oil. No need to use any of the snake oil additives.

Jim

That's not such good advice anymore, I think. CI-4 and CJ-4 are for diesels. They used to have a lot of Zinc and Magnesium for anti-wear. But, diesels now have cats. CJ-4 doesn't have the additives it used to. And you really have a tough time finding CI-4 on the shelf any more.

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