I was driving threw Omaha the other day. I drove past some quick oil change dealer. They had a sign that said "BUY 4 TIRES GET FREE OIL CHANGES FOR THE LIFE OF THE TIRES!". How bad do you think the oil quality is there?
Probably cheap oil, and a great opportunity to try to sell you some kind of service, like a brake job, front end work, a tune up and anything else they can think of when you're in for that "free oil change." I'd pass.