Chosen Solution
After my father got an oil change, the car’s engine, upon starting, makes an unusual sound. The car shakes violently, to the point you can see the seats vibrate, and the gas mileage is so bad, the tank has to be refilled every 2-3 days. Do you have any suggestions?
Sounds like you have a cylinder not firing. I’d take it to an auto parts store that does free computer read outs and see if that can tell you where your problem is. AutoZone will do this for you in the expectation that you will buy parts from them.
