what is the thinking on oil for roller cams ? is a high zinc oil still a good idea or does it make no diffrerence ?I'm using valvoline synthetic VR-1 10W-30 this year for the first time because Hughes says to use 10-30 with the roller lifters
It's not necessary to use high ZDDP oil with a roller cam. It's an anti-wear additive, so it doesn't hurt. A SN+, GF-5 rated 10W-30, which is limited to 800 ppm of zinc and phosphorus, will do fine. The good news is it will be much easier to find an oil suitable for your engine.
How do you like your Hughes lifters?
