I have read that SF rated oil is fine for flat tappet cam engines. However, SF rated oil is now obsolete. I have searched the net to try and determine what the SF rated oils had in the way of ZDDP (Zinc/Phosphorus) and found nothing.
Does anyone have info on what the actual SF specs were, for Z & P on SF rated oils?
So much [censored] concerning ZDDP levels on oil that, if I had the original API SF specs, I could make a more inteligent choice on what oil to run.
Please don't give me specs on the boo-tique oils that are popular, or on any other oils.
Given the correct information, I can make my own choice.
Thanks,
Does anyone have info on what the actual SF specs were, for Z & P on SF rated oils?
So much [censored] concerning ZDDP levels on oil that, if I had the original API SF specs, I could make a more inteligent choice on what oil to run.
Please don't give me specs on the boo-tique oils that are popular, or on any other oils.
Given the correct information, I can make my own choice.
Thanks,