Anyone using Napa oil? Is it just lower cost Valvoline? Are Napa parts ok in general? Im full of questions.

Contact www.blackstone-labs.com and order a kit for your own car to sample!quote:
Originally posted by Ilikesynthetics:
I`m using the NAPA high mileage 20W50 in the wifes 87 Mazda RX/7, wish someone would do an analysis on this oil.