Napa house brand oil is the same as the Valvoline brand. I changed my oil today and tried the Napa HM 10w30 because of the increased price on Maxlife. The Napa oil was over $1.00 cheaper. It poured like Maxlife, was exactly the same color as Maxlife, looks to be the same thickness as Maxlife and even smells the same as Maxlife. My truck sounds the same at start-up, builds oil pressure the same, runs and idles the same as it does on Maxlife.
I had searched here and on the Internet for an answer whether the two are the same and I found no conclusive proof. I emailed Ashland and they said it was the same base stock with a different add pack but they never came right out and said yes or no.
As far as I'm concerned, if it looks like a duck, walks like a duck and quacks like a duck, well then it must be a duck. And for what it's worth, before I did the OC I had to take my used oil to AAP for recycling and their price on Maxlife was the same as Napa, $5.09 per quart.
As long as I have no detrimental effects from the Napa brand, I'll keep using it.
I had searched here and on the Internet for an answer whether the two are the same and I found no conclusive proof. I emailed Ashland and they said it was the same base stock with a different add pack but they never came right out and said yes or no.
As far as I'm concerned, if it looks like a duck, walks like a duck and quacks like a duck, well then it must be a duck. And for what it's worth, before I did the OC I had to take my used oil to AAP for recycling and their price on Maxlife was the same as Napa, $5.09 per quart.
As long as I have no detrimental effects from the Napa brand, I'll keep using it.