i have always wondered, why does walmart never seem to feature its own supertech brand in its oil change specials? for close to its current $20 conventional quaker state green bottle special couldnt Walmart offer a semi or full synthetic supertech special? i know that oil makers offer incentives to Walmart for pushing their brands as specials, but by not headlining supertech Walmart sends a subliminal message to consumers that its supertech is second class.