Earlier today, I decided to check what level my oil was sitting at. After peering at the dipstick for a few seconds, it become clear. It needed more oil. I headed up to my local 7/11 (I live in Australia) and picked up some 20W-50 oil. I then proceeded at the station and put it into the vehicle. Immediately, it become clear that something wasn't right. It was jerky and couldn't maintain performance as it did before I added more oil. I was wondering if anyone could shed some light on this. Thanks, Daniel.

Hmmm, sounds like too much oil.