Originally Posted By: FastSUV
If I recall, he is from "Texas" too is he not...hmmm
Anyway, it is documented the 4.7 is a sludger and that is why they came out with the half-hearted TSB fix that really does not fix the issue.
It is more seen in 4.7's that do FST's and are where it is colder outside though. I have heard there is a hack that can be done with a Chevy PCV that resolves the problem, but again, if someone has a 4.7 and uses 5w30 and chnages it by 3-4k then most likely they would be okay unless conditions above. It was apoor engine design to cause that problem.
This is not good to know. Time for a round of ARX in the WJ when it comes back. My brother changed the oil in it and said it's either burning a lot of oil or leaking... now I have to consider another option... GREAT. Hopefully the Pennzoil HM I had him use this time will clear up any issues with the Mobil Clean 5000 that was previously used. Maybe I'll have to run a few short OCIs with PP.
If I recall, he is from "Texas" too is he not...hmmm
Anyway, it is documented the 4.7 is a sludger and that is why they came out with the half-hearted TSB fix that really does not fix the issue.
It is more seen in 4.7's that do FST's and are where it is colder outside though. I have heard there is a hack that can be done with a Chevy PCV that resolves the problem, but again, if someone has a 4.7 and uses 5w30 and chnages it by 3-4k then most likely they would be okay unless conditions above. It was apoor engine design to cause that problem.
This is not good to know. Time for a round of ARX in the WJ when it comes back. My brother changed the oil in it and said it's either burning a lot of oil or leaking... now I have to consider another option... GREAT. Hopefully the Pennzoil HM I had him use this time will clear up any issues with the Mobil Clean 5000 that was previously used. Maybe I'll have to run a few short OCIs with PP.