So I was out of the country and sent my girl to do an oil change. Apparently when she took it they (Walmart Tech) said the car was low on oil. Anyways they did the oil change and when I came back I noticed they used 6 quarts of oil. I drove over 200 miles to San Antonio and on the way back at one point I noticed the car wasnt taking the gas when I hit the pedal and in no time there was smoke coming from all over the engine and when I opened the hood oil was visible near the coil that has the spark plug wires. I let it cool off, then I noticed the car is slamming into gear(My car is SS but I hardly use that option). The car ran like a beast to get home and then I noticed the same trans issue. I know I need to replace 2 motor mounts so I am wondering if that is the problem. This morning when I first got out it slams into reverse and D and when driving it hesitates when changing gears. Now this afternoon the car seems to be running fine. I plan to get it checked out tomorrow but I am just curious as to what caused this. Your help is greatly appreciated.