Let me tell you a story.I was on the phone with our MB associate today and he said every mechanic in the shop went to go look at my dad's car and they all smelled diesel. He also saved us a sample of the fuel put in the tank if we wanted to have it lab tested.
I'll be back with more info but I have work soon. Thanks for everything so far guys.
My wife bought a 2008 saturn vue used from a local dealer. car ran great, no issues till one day she called to tell me it sounded like a diesel and was throwing a code. We took it to the closest GM dealer (under warranty still). Being a car guy, I immediately searched for what the issue might be. I found some vague references to piston ring tolerances, but more on that later.
The dealer calls us back and tells us that lo and behold, a piece of the oil filter disintegrated, got sucked into the engine and starved the engine of oil. The cost to diagnose/repair this (IF it could be repaired) was so high that they wouldnt really tell us and definately not covered under our warranty.
I called the dealer we bought this from (still the original filter) to see what their end would be. they informed me that since this was NAPA filter, to contact napa. I did, and turns out napa was willing to cover our repair IF the filter was truely defective (which it was). However, we had to pay for the repair, and napa would reimburse us.
Now the dealer had a firm price, about 2500. They started to fix it, put everythign back together, but the car was still misfiring. I did some more reasearch and found a guy with the same problem. Turns out this cylender ring issue was the culprit, covered under warranty and fixed the problem. I told this to the dealer, but they kept saying it wasnt it and never could lick the problem. But they got tired of working on it because they had probably already burned through the 2500 they agreed to to fix the car. I couldnt submit any more to NAPA and I wasnt going to pay for it.
this dragged on for a month before they finally gave us the car back and said, not to bring it back in.
The long and short of that story is that a dealer (especially a dealer not an indy) will tell you anything you want to hear when they know they are getting a cash repair. The way that they left it up to you to VERIFY it was diesel completely absolves them. They get paid regardless, and if you keep having problems, they will keep fixing them for you and telling you to try and get reimbursed for it.
Good luck man, regardless of the fact I think your trolling, this still sucks. I know how bad it sucked for us and I was only out of pocket $75 for the alignment that NAPA wouldnt cover.