The oil cooler gaskets were replaced a few months ago. When I was in there, I saw traces of oil lining the inside of the cover and in the crevices. Cleaned everything out as best as I could and flushed the coolant system with cascade dishwasher soap. But oil is still appearing on the radiator...
1997 LX 450 with 214k miles. The problem is a bubbling sound behind the dashboard when I switch the heater on after driving for a while with the AC. Earlier, the gurgling sound would occur first thing in the morning as I pull of the driveway. But since then, I replaced all the heater hoses...