My friend has a Jeep Cherokee and while I know a lot about oil he knows nothing. His dad ran RP 10W-30 in it and changed it every 10K miles
without any sort of analysis.
He asked me to change his oil and I did, and man the whole top of the engine from what I could see was sludge city. It runs alright, but has 160,000 miles and a very slight rear main seal leak (This is the 4.0 Inline 6). I ended up putting Mobil 1 10W-30 in it, at his request, and now I'm wondering what AutoRx could do for this engine.
Could I get the sludge out? Would it fix the rear main seal any to run AutoRx? I've never used it, I did recommend it based upon what I've heard from this board, but I'm just curious. It seems like a good application but I don't want to harm the engine since its so old.
He asked me to change his oil and I did, and man the whole top of the engine from what I could see was sludge city. It runs alright, but has 160,000 miles and a very slight rear main seal leak (This is the 4.0 Inline 6). I ended up putting Mobil 1 10W-30 in it, at his request, and now I'm wondering what AutoRx could do for this engine.
Could I get the sludge out? Would it fix the rear main seal any to run AutoRx? I've never used it, I did recommend it based upon what I've heard from this board, but I'm just curious. It seems like a good application but I don't want to harm the engine since its so old.