Quote:
Originally Posted by mthomas58
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!
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I don't know how difficult it would be to get to on your engine, but one thing that really helps speed up system flushing is to temporarily remove the thermostat, that way you can pump water/cleaner mix through there unobstructed and do not have to wait around for the mix to warm up enough to open the thermostat each time (if you are doing a fill/closed system, run engine, and dump coolant type process).