4.6L SOHC (stock)
12,000 mi
mobil 1 5w-30
triax
normally i dont drive it too hard, normally just like 3.5k is the highest it sees
today i romped it up to like 4.5-5k one or two times and i heard some pinging. for a second or two. i was able to duplicate it later on by going to like 3/4...