I was looking over the numbers on some of these oils and it occurred to me that some of the WPP (Warren Performance Products?) oils have one formula and some have a different formula. The Peak, Mag 1, AZ, Winner's Circle and Proline have the high sodium formula while the Supertech and Accel have the higher calcium/boron formula.
I had thought that all WPP oils had the same signature but apparently not.
The high sodium versions look more like Valvoline products....
http://pqiablog.com/2015-motor-oil-samples-tested/
I had thought that all WPP oils had the same signature but apparently not.
The high sodium versions look more like Valvoline products....
http://pqiablog.com/2015-motor-oil-samples-tested/