All,
Is M1 really the more popular selection for oil?
I have been an ardent fan of M1 15W50 for my other car. Before that was Castrol 20W50, 10W60. Now, I have Elf 5W30, 10W50 in that car and I love it. Oil temps are better even under the worst track conditions.
What about Motul? I am thinking of setting up a wholesale account with them.