Originally Posted by MattP725

We don't own BMWs...

Whether the oil is good for 3k or 30k is really not the issue... the issue is that if you don't follow Nissan's maintenance schedule they have every right to deny your warranty claim if that failure to follow causes the damage.

I'm sorry if it hurts your feelings but there is no rational explanation to not changing/checking the oil level for that long of a period. Even if you own a BMW and have 15k intervals, you would still be insane for going any extended time (1-2 months) without checking the level. You argue that it should be Nissans fault since they know the car burns oil... well doesn't that mean YOU know it burns oil too? 7k on a car that burns oil?

In addition if the car had a bad knock and the check engine light was flashing it was not wise to drive/rev the car even if you went right to the dealership... it was likely that the damage was already done but you definitely avoided any chance of saving the block that way.

I do agree that if the level was that low that the dealership should have noticed but you also should have at a minimum asked them to change it while you were there since it was so long since your last change.

I hope it works out and they end up covering it but in the future you have to help yourself and not neglect recommended maintenance and then deny all responsibility for the premature failure. Even if just to satisfy the document requirements for any warranty repairs... I document everything I do on the car with receipts and mileage just for that reason. IMO the dealership has SOME fault in this but majority is yours.