When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I've been running Valvoline 20w50 with no problem. I switched to it even before I went turbo, also Scott at Mazsport has been using it for over 10 years on all his turbo rotaries and NA rotaries!!