i have called 3 autozones and 1 advance auto. They didnt know what an oil cooler was. I have a 2003 honda civic, with oil getting into the radiator but not the otherway around. hmm i am NOT losing much oil at all, maybe half a quart a month. BUT i have had to refill radiator many times, and even replaced the thermostat because it was sticking closed. CAN anyone tell me if i am on the right track to replace the oil cooler o-ring, and should i go underneath or above for my model. thanks in advance.