Yesterday I noticed my oil pressure on my 02 duramax was lower than normal, so I pulled into the place that services my trucks and the technician tells me that my truck is about five quarts over full. Come to find out there was deisel fuel in the oil. Called the dealership where I purchased the truck and they informed me that I had bad injectors and that they would fix the problem under warraty and that GM had a recall on them and was extending te warranty to 200,000thousand miles. Anyone expereinced this and what should I check when I pick up my truck. They are replacing all of the injectors and tubes.