02-10-2010, 11:18 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,455
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Not Ranked
Pretty much all on-road motor oils are now low ZDDP formulas. Even the diesel oils have been cut by about 25%. There are a couple of oils that have a higher number, but they're not approved for on road use. Those oils can be a little bit difficult to come by, and expensive.
I good alternative is to get a ZDDP additive and pour it in with every oil change. For my diesel with flat tappets, I use the stuff from Comp Cams. Add it to the oil change. No need to spend that much money for my diesel pick up. I have heard that STP is ZDDP in an oil base, but have not been able to find proof of that.
Keep in mind, this only matters if your engine has non-roller tappets/lifters; solid or hydraulic. |
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