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what oil has the most zinc

Old 09-27-2012, 08:54 PM
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one thing i will say about Lucas is that test there oil in just about every racing arena you can think of, teage will say amsoil, nigel hook will tell you lucas, ive never seen a joe gibbs boat, or a brad penn boat, but I know a few engine builders that distribute brad penn. not sure if its cause they believe in it or cause that's what they make a buck off of. $.02 Also on the penn oil it is possible that test I referenced ealier may have been penn pcmo and not penn grade 1. http://www.penngrade1.com/Zinc.aspx I hade pen grade 1 on in engine that sat for nearly 2 years in a minnesota in garge that was heated up cooled down multiple times in the winter. crazy condensation on any thing metal. when I opened that engine the bores looked perfect. and there was still green oil stuck to the walls.

Last edited by professor_speed; 09-27-2012 at 09:09 PM.
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Old 09-27-2012, 09:04 PM
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FWIW, if you need some original GM Break in Lube, not the new "watered down" stuff, give me a shout.
If you are running flat tappet cams, you better always run high ZDDP oil, not just break-in.
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Old 09-27-2012, 11:31 PM
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How bout good ol Mercruiser 25w-40? Has 1120 zinc.
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Old 09-28-2012, 09:23 AM
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For those not in the know.


PCMO=passenger car motor oil.

Ken
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