Originally Posted by wanker

Have your car towed to a reputable mechanic (it doesn't need to be a Nissan Dealer). Why are you messing around with Autozone? If it's a minor issue, then a good mechanic will let you know, and charge you accordingly.

If you car is nearing 50,000 miles, then you will need a good mechanic at some point. Might as well find one now.