My brothers F150 with the 3.5 L gas with 119K miles on it was showing check-your-wallet codes P0014 and P054A (both for exhaust timing over advanced bank 1.)
His mechanic looked at it and cleared the codes and they have not yet come back.
I have seen that owners of F150s have ran heavier oil (Ford specks 5W-20) in these engines to get longer life from the cam chain system.
He is doing an oil change today. I recomended Pennzoil platinum 5W-30 and a Fram Ultra XG10575.
He will be doing another oc before winter, so this will be out of it before then.
I saw that some are running as heavy as 15W-40 in these engines.
He has always ran 5W-20 in the past with 3K to 5K oc intervals. I know the damage that has been done is there to stay untill parts are replaced, and that it probably will not be long before the codes come back.
What are your thoughts on running the PP 5W-30? And what would you run in it in summer, and what in winter?
He tows a RV up to a campground in the spring, and leaves it there all summer, and moves it to and from storage to sites about a mile away to a camp site all summer, and brings it back to Rochester PA in the fall.
His mechanic says to run it untill it does not run right.
What are your thoughts about oil weight to run in this engine?
Thanks for any replies.