Quote:
Pennzoil's cleaning campaign is selling a lot of oil.
Is/was the average consumer ever worried about this? I would imagine some Toyota/Lexus or VW/Audi owners would latch on to the notion, but I really can't see the consumer market, at large and en mass, having a clue one way or the other. They're too busy thinking with their dipstick, Jimmie ..or equivalent (Jane) living on the Edge.