Well I dropped the pan last night on my 1.5 d15b2. What I found was some speck kinda stuff on the screen and down in that well that the pickup sits in. The screen wasn't cover up but there were some stuff on it. Not sure how much it takes to trigger the pressure light though. It's amazing how dirty the oil looked with only a hundred or so miles on it! Any ideas? Would that cause the pressure to drop when revving it just slightly (only up to like 2000-2500rpms max)? No sludge in the pan at all.