Valvoline is all I have ever used. Broke in the .557 cam in my 63 last year with Valvoline and no problems. I have never had a cam lobe wipe and like I said I always use Valvoline. Ron
Thanks Ron, I decided to do the same so I got my brother bringing me back a case of 10w-30 VR1 from Arizona next week and I'll change the oil for the winter. From Arizona you ask, you can't get the VR1 in 10w-30 up here in Canada only the 20w-50 at NAPA stores.