Quote:
Originally Posted by aigel
Definitely have them change the oil and give you a sample. My shop at the time didn’t change it. I changed it myself and sent it in for analysis and lo and behold, it had traces of coolant.
For me it was a warranty repair. The shop did a mediocre job. Replacing only some of the hoses and the expansion tank. Oil sludge came back and it really soured me on the truck, Even though it probably ended up being reliable. I drove it for a while while and sold it during the pandemic when prices were crazy high.
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Well I've had the Jeep repaired and have been driving for about three weeks. They replaced the radiator, water pump, overflow tank, Oil cooler with the Dorman aluminium housing, and all coolant hoses. Total repair with extensive labor flushing to oil out of the system was $3,200. Runs great and oil remains steady at normal operating temp. HOWEVER, I too am seeing recurring oil sludge in the top of the overflow tank which I contiinue to clean out regularly. They told me they were unable to flush all of the oil out of the block and advised me to return for a radiator flush after running 200 miles. After extensive research on the interwebs I'm planning on flushing the system myself using low sudsing dishwater powder and water then disconnecting radiator and heater core hoses and flushing everything in both directions. I'll do as many iterations as I need to get all of the oil out ( guessing 3 or 4 times) I'm guessing this will take half a day or longer and I'm not confident the shop will be as diligent as I intend to be. I'll measure the flushing results by collecting and comparing water bottles of each flush cycle - should be interesting!