Anyone seen the most recent Castrol 'sludge' commercial? A bunch of people are driving along, while the announcer talks about sludge, and then suddenly a load of thick, ink-black sludge is dumped on the vehicle they are in. Its kinda gross! I just think its ridiculous how much Castrol is pushing this anti-sludge thing. Most cars don't produce it these days, so are they just targeting Toyota, Chrysler, and VW turbo drivers?