Mobil1 does pretty well too right across the board.
I get it in Costco for $30 a case. Can't beat that?
I found that the STP in the BLUE plastic container contains a ZDDP additive for your oil.
One container does 5-6 quarts.
You have to check the ZDDP contents in the Mobil1. It does vary even from weight to weight.
The only issue I have with the link and the results is it sounds like a commercial for Prolong?
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