6,000 engine hours.

6,000 hours. 232,500km (lots of off road use and beat on constantly), oil changed every 4,500km since new with castrol synthetic. Cylinder 5 miss fire happened right after i changed the oil. I am suspect of the cam/lifters being the cause, i will update this post with my findings for anyone who’s curious or has a similar issue will probably be a few weeks, i am a mechanic but just don’t wanna work on it right now. i have to take a break from this money pit before i go insane