The actual coolant level has stayed the same where it should be. The oil was on top of the antifreeze. I've started running the air conditioner and it is fine. I'll check the heat.
Absolutely. the hydraulic oil cooler is piggy-backed in a package with tbe coolant radiator and both are air-cooled.
I knew they were side by side but I could have sworn they were separate units. Guess my memory's a bit foggy there too.
On the OP's machine both radiator and the hyd cooler are just one Part Number.
Is it possible that the crossover of fluid is happening at the engine oil cooler?
Certainly. Try disconnecting the coolant pipes where circled and temporarily connect the two hoses together. Then start the engine and check if you have oil coming out of the circled coolant ports of the cooler.
Did you flush the cooling system with detergent.? If not you might find traces of oil appearing in the expansion tank from time to time literally forever. The best thing to use is Cascade dishwasher detergent because it is non-foaming. Don’t be shy with it, toss a load in and get the cooling system well warm. Rinse and repeat until there is no trace of oil when the system is drained.
I have not flushed the system with detergent. I did remove all the oil from the reservoir tank prior to flushing. As of now I have no oil showing up in the reservoir tank after a few hours of running. If I do I will use the detergent method. Thanks!
