[O' yeah"74]

Thanks for the link J. Brown. I live in a very rural area and don't have access to a variety of oils, as a matter of fact the only 20/50 I can find is NAPA brand 20/50 packaged at Ashland Oil (same as Valvoline). I have Swepco oil improver, do you think I'll be ok to use the NAPA oil with the addition of the Swepco (in proper ratio of course)? Otherwise I'll order a case of appropriate oil on line.