palmerwnd, I had always thought that Valvoline All-Climate was refined by Ashland ... but evidently most (all?) is actually bought from Petro Canada or another concern. Ashland must use their refineries for other products.
Ken2, we all pretty agree that every major brand is at least decent. So, my bias towards producers that make their own is showing here. I didn't tell
Tommy to pick another brand but I just don't think there's much of a difference between the two for the reasons I cited.
Also, the ink on the BP- Castrol deal is still fairly fresh. It may take several years to fully integrate production of all products.
![[I dont know]](/forums/graemlins/dunno.gif)
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Bror Jace