Zinc or no zinc

[stroked67]

OK guys, with a solid roller cam, is oil with high ppm zinc the best way to go? If not what do you guys reccomend?

[jayb]

The high zinc content is probably not required for the lifters, but it will help the cam gear and distributor gear wear in nicely.  I'd run it, for a while anyway...

[Drew Pojedinec]

Not that it's a suggestion one way or the other to the original poster.....

The massive engines I work on, we don't change the oil at all.  Not for 50k + hours.  The only reason we'll ever change the oil is if zinc levels are higher than 10ppm.
An engine doesn't *need* zinc.  Only a cam, or any other metal that has a sliding high pressure action across the face of another piece of metal needs it (why most greases have a ton of zinc).

[stroked67]

Thanks guys, I will pLan on running it this summer and see how things look when I tear it down to lifters next winter.