herrrrooooooooo.

just got myself a little bunky and saw the oil levels were quite low with a little burning so i topped it up with a little oil and didnt think twice about it. Now its idling quite high at 2k and up to 3k while cruising in neutral. When i turn off the car, the revs drop almost immediately and the car feels as if stalls.

going to change the oil tomorrow. was it a bad idea topping up? seeing as i dont know what was in it before and probs mixed different stuff? would this cause the high revving?

g