[12magnum]

what types of oil is everybody running in their 32 valve 928?

i live in an area where temps range from 40 degrees to 100 degrees. my manual shows that API SF or SE oils are approved by porsche. it looks like 20w-50, 15w-40 or 15w-50 will work the best for my temperature range.

i was looking at running mobil 1 15w-50 extended performance in my car but the oil is API SL, not SF or SE. plus i'm worried that this oil may have too much detergent for my 20 year old engine.

thanks