I've recently purchased a '96 Park Avenue Ultra which has the series 2 3800 motor supercharger. I knew it had a small oil leak when I bought it but I was told it was a valve cover & an easy fix. I noticed today that my coolant reservoir didn't look as "green" as it should, so I dipped a stick in it & it came out oily! I contacted a friend with more mechanical knowledge & he said that I might need to replace my radiator due to a blown cooler, but it could also be coming from my supercharger due to a crack or bad gasket. Has anyone had this issue or know whether it'* the radiator or the supercharger?