2003 4.6 XLT Black Explorer,Built, blown, ported, cammed, and on and on...
2009 Pontiac G8 GT Stryker Blue, 402ci Stroker, Twin Turbo's, 230/240 Turbocam, Circle D Built 6L80E, Circle D 3000 Stall, and a few other things...
I've had one complete engine rebuild on my M6 and my opinion is- take it to someone who understands these engines. They can never tell it's for replacement until they check the actual engine oil level and open it to see the damage inside.
I'm confused... did you buy this car from Carmax? I can't imagine why you'd have the car towed there unless that was the case.
Read your paperwork on the warranty, and see if it covers any place (such as a BMW dealership) to work on your car. If so, have it towed there. Those clowns at Carmax wouldn't know how to work on anything more sophisticated than a Camry.
I suspect that if you are 25 as your profile says, that they are or will try to take advantage of your youth. Get someone to help you, someone who can read and understand the warranty fine print and will keep you from having to shell out any more money.
When this all done with, we need to have a discussion about buying cars from Carmax, OK?
Sorry to hear about this. Don't blame it on the BMW though There was a thread on here about an M6 with over 140,000 miles on it and no problems. Most likely it was the first owner who really screwed something up and didn't take care of the car. This is one of the reasons I never buy used anymore for high end cars. Either lease, or buy new. I have always spent more money repairing used cars then what it would cost to buy new lol.
Anyway, see if you can take it to somewhere besides carmax to have the work done and if they will cover it under warranty. Most likely they will try to say it's not covered, but try to go through the paperwork yourself and convince them you did nothing wrong. They have to PROVE that there was negligence to not cover it. The proof doesn't have to be on you, but with them.
If they will write you a check for the work that would be best. Then you can go get the work done by people who know what they are talking about. Like a few said on here CarMax really doesn't know anything about this kind of car...and most likely the sales people ragged on it hard when it first came in. I am sure it's the highest end car they have ever set foot in.
I would go get the Dinan stroker if they will write you a check Might take a lawyer and about $500 in letters from him, but it would be worth it.
1) Get it away from the Stealer ASAP.
2) I would bet odds there is nothing wrong with your engine.
Most like the sensor (as above)
Second most likely the oil pump.
You did right shutting it down. There is almost certainly no engine damage.
Its BS like this that scares everyone in to buying overpriced warranties and cause the price of the warranties to be so high in the first place.
they told me they drained the oil and found metal in it (like debris). too late now as I authorized them to go ahead and check it out. if im not covered in anyway, ill lawyer up and take em to court. no update yet. probably tomorrow or maybe thursday. ill keep you guys posted.