WAl MART left my oil cap off when I got my oil changes 4 weeks ago and I hadnt noticed it until I popped my hood, my AC smelled like oil, but I figured I had a bad filter. When the hood was popped the oil cap was left off and OIL WAS EVERYWHERE. I filed a complaint. They were very rude and asked me why I hadnt told them before, it was because I am a student and am very busy and didnt really notice it until oil was leaking from my hood. I WILLLLL NEVER EVERRR get my oil changed at WAL-MART they will mess your car up.