Just wanted to report that on the previous oil changed I used NAPA's 15w-40. Went 5000 miles and had the oil analyzed. The NAPA oil did better than the premium blue I had been using. They told me their oil was made by Valvoline, so I was a bit surprised that it tested better than premium blue.
Just wanted to report that on the previous oil changed I used NAPA's 15w-40. Went 5000 miles and had the oil analyzed. The NAPA oil did better than the premium blue I had been using. They told me their oil was made by Valvoline, so I was a bit surprised that it tested better than premium blue.