Quote:
Originally Posted by TCL
What kind of oil is recommended to use after a h/c job. And do I have to change after so many miles?
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Unless you switched to a flat tappet cam design and/or raised redline rpm by thousands....than regular oil as recommended should do just fine imo. But if you are worried call a reputable shop like Lingenfelter (or others) and see what they recommend as they warranty their cam packages.
Note ZDDP is not just zinc, but also phosphorus and the latter will have an effect in the CATs. Also note that ZRod oil (10W30) has been specifically designed for flat tappet cam motors (and the chances are very high that's not what you have) and falls outside viscosity ratings recommended for LT1.