Crainey said- BP, Amoco & Standard according to his memory were the basic sources for all motor oils! My question is, which one is the source of paraffin base oils.
I have personally had exellent auto engine life with paraffin base oils having exceeded well over 200,000 thousand miles on more than 5 different vehicles with this type oil. My father's truck fleet with paraffin base went farther before overhauls & were immensely cleaner internally than my uncle's trucks did with asphalt base oil. However, Uncle blamed his drivers. Some of my close racing buddies have not had good luck with the asphalt base oils, in fact, they have blown several engines over the years. My 2 bits (25 cents) -F Steel