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Old 01-19-2011, 10:43 PM   #5
85Bowtie
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Join Date: Mar 2009
Location: TN
Posts: 410
Re: Oil Additive

That's all BS. The only additive you need for a flat tappet cam is a bottle of break in lube every oil change. On old motors, you may benefit from adding a quart of Marvel Mystery oil to free up the rings, lifters etc, it's pretty much the same thing as ATF. If you run a quart of ATF through your engine, it will clean all the gunk and crud out, then do an oil change without it. Everything else is a gimmick.
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