5w30 Castrol GTX. I also run an air/oil separator between the PCV and intake to reduce blow by even more.
I use the seperator also...but never heard of synthetic being bad for a supercharger. I run a centri style charger, p-1sc, i wonder if its an issue for roots style that use same oil as car uses.
Prochargers are self-oiling. Kenne Bell twinscrews are self-oiling. Vortech/Novi blowers are NOT self-oiling; that is, they use a oil feed from the cars engine oil, and drain back into the pan.
Something about synth and how it can seep into seals or something makes it bad, I don't remember the exact reasons
i wonder if its an issue for roots style that use same oil as car uses.
Valvoline, Quaker State, Castrol, etc......all the big brands still make high quality versions of "Dino Oil" (non synthetic) I run the Quaker State myself.thats true, the motorcraft is a synthetic blend, so that wouldnt be that good either. the dino oil, is that oil ok?
i mean is it good for the engine? that just means that there is no synthetic in it at all right?
valvaline is one?