i don't like answering questions like this but what the heck.
your oil is just to thin in my opinion. thats my thought and no science to back it up. need to get into the heavier stuff like mobil 1 15/50.
now as to the running, no idea. would see if it comes back and then worry.
you could get someone to test for codes. has to be a machine that can read pending stuff also.

george