My son is looking at 2000-2004 Grand Cherokees for his first vehicle. He's 15, so he's going to be fixing it up before he can officially drive. This is going to be a great learning experience for him. Anyway, we'll land one soon with mileage in the 140-160k range.
We're going to run a couple of OCI's to clean things up and get it ready for its future normal diet which he's narrowed down to Mobil 1 HM, PP HM, or possibly Valvoline HM synthetic.
What oil would work well for the cleanup of any deposits or sluge in that old 4.0? I'm leaning toward advising him to use Pennzoil Platinum for that job, but wanted to see if someone has this kind of experience with this engine? I know some of these get seeping or small leaks from the rear main seals, too. Is there a particular HM oil that plays well with that issue, if it is present?
He'll run Fram Extra Guards during the cleanup runs but says he'll switch to the TG or Ultra Guard when done.
My next question is, has anyone settled into an OCI that works well with this engine? 5k? 6k? 10k?
He's pretty excited about the GC and is looking forward to learning how to fix it up and maintain it. I think he'll wind up a future Bitoger, once the infection sets in!
We're going to run a couple of OCI's to clean things up and get it ready for its future normal diet which he's narrowed down to Mobil 1 HM, PP HM, or possibly Valvoline HM synthetic.
What oil would work well for the cleanup of any deposits or sluge in that old 4.0? I'm leaning toward advising him to use Pennzoil Platinum for that job, but wanted to see if someone has this kind of experience with this engine? I know some of these get seeping or small leaks from the rear main seals, too. Is there a particular HM oil that plays well with that issue, if it is present?
He'll run Fram Extra Guards during the cleanup runs but says he'll switch to the TG or Ultra Guard when done.
My next question is, has anyone settled into an OCI that works well with this engine? 5k? 6k? 10k?
He's pretty excited about the GC and is looking forward to learning how to fix it up and maintain it. I think he'll wind up a future Bitoger, once the infection sets in!