You can pressure test it to check for leaks, if it was leaking the oil would be milky anyway. You can check the temperature(laser temp gun)in to and out of the cooler to see the efficiency.
the oil cooler shoule be pressured tested, or to test it yourselve disconnect the two ware pipes going to the oil cooler and join them together. The car can now be driven once you have toped up the cooling system. If oil leaks from the oil cooler out on to the groud then the cooler is faulty. If cooler is o k then the head gasket may be faulty
Oil cooler is bad.
put air presure on the two holes for the hoses and then put in a drum of water if makes bublees is bad if not is ok
You can tell the oil cooler is bad in a Cadillac CTS 2003 when oil is in the coolant and the water turns into a white muddy substance
oil
Recently I checked my cooler water level, and noticed that there was a layer of oil, I also checked to see if there was any water in the engine Oil, there was non. So i heard from VW, saying that it could be oil cooler, intercooler or the head gaskit. All answers welcome. Kind Regards Bal
It depens on the size of the oil cooler.
Milky oil is oil with water in it. The water is usually coolant. Common causes are failed headgasket, cracked head, internal leak in an oil cooler.
Normally liquid cooled has water... and a oil cooled is just that it has a oil cooler
oil cooler or head gasket might be blown
it cools oil by circulating it thru an external cooler and works on the same principle as your radiator hot oil flows thru the cooler and is cooled by air thus "oil cooler"
it cools oil by circulating it thru an external cooler and works on the same principle as your radiator hot oil flows thru the cooler and is cooled by air thus "oil cooler"