Jeep Garage  - Jeep Forum banner

Oil Cap Residue

4K views 8 replies 4 participants last post by  hoffmanestates 
#1 ·
I'm looking to buy a 2005 Grand Cherokee Limited. After I took it for a ride and checked the 4.7 engine compartment I noticed a familiar creamy residue on the oil cap. Had this same thing on my 4.7 HO before the head gasket went out. :mad: Is this a common thing to find this residue or just on pre-gasket blowouts?
 
#2 ·
During colder and humid weather its quite common to find this buildup on the oil filler cap, especially when shorter distances where driven and the engine didn't heat up completely.
Check the oil dipstick for eventual coolant mix in the oil.
 
#7 · (Edited)
Never go by what we say, its your car we give you info on what we have seen or went through, there might be nothing wrong with it at all. We did have a long winter so inadequate warm up could be a factor. Do more tire kicking, smell exhaust if its sweet, over flow tank bubbling or oily residue, dipstick over full or milky, heck ask seller if you could take it to a local mechanic and do compression rest, leak down. If it comes back as failed tests, then you have the cards in your hand.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top