Originally Posted by
Car54
I run 15w50 most of the year. It's a mostly track car and I really don't drive it unless I know it will be long enough to heat the oil up. My goal was that when oil was 260-280 it was still thick enough to lubricate and create good oil pressure. Without an oil pressure gauge, you're really just guessing at the right viscosity. Having a Blackstone analysis from time to time is helpful to know you're not breaking down your oil, and that your engine is protected.
Maybe ask you instructor what he runs and what he does to control temps. I would at a minimum move to Xw40, ESPECIALLY in the summer.
I'll check with him. I think he has a Ron Davis radiator with a built in oil cooler and accusump setup.
I have the stock oil temp and oil press digital readouts on the dash, but not sure how accurate they are... after about 15 minutes into my run I'd get the "warning" beep that oil temps were over 285*