I've got a 1998 mustang GT convertible with a 4.6L v8 and automatic tranny. It oddly has the oil cooler part that I've never seen on a GT.. anyways when doing an oil change and oil filter change I noticed there was antifreeze leaking from the cooler, not from where the oil filter attaches just where coolant goes to cool it, I took it to napa and autozone they didn't have o rings, seals or rebuild kits so they told me to contact ford but being Sunday I havent been able to contact ford yet, I was wondering if this is an easy fix, will rebuilding the air cooler, aka replacing the o rings fix the leak I saw? There's no oil mixed with coolant or vice versa all fluids are separate. I picked it up last week from a 75 year old man that used it in nice days with his wife. He owned it since 2009 he had kept it stock and maintained well its a beautiful car the reason I bought it and it runs great! But in concerned with the oil cooler leak. And dont really have 400 dollars for a new oil cooler unit.