psuwheeler
NAXJA Forum User
- Location
- pa
alright im lost, i have a 99 4.0 aw4/242 heres the problem: after the jeep gets warm and its under load (pulling off from a traffic light or starting up a hill from stopped) i get a knock in the engine. it wont do it when its cold. ive been running pennzoil 10w-30 with a bottle of stp oil treatment in it. its been doing it for about 2 oil changes now (6k). ive searched but havent found anyone thats had the problem while its at normal operating temps.
