I've switched from 20W50 dino
oil (previous owner's recommendation) to 5W30
synthetic. I'm running a Melling High Volume pump (M84DHV) and a custom pan from Armando's Racing
Oil Pans in my BBF. Here's what I get:
- Cold: 70-75 PSI
- Hot (190°-200° F coolant and oil temperatures): 50-55 PSI @ 2,500 RPM
Not a lot of experience since the change, but the engine seems to turn over / start easier and run just a bit cooler - roughly 10° F.
I think I'm good.