[Hodo]

telling you its probly the fuel your running what octane you running in the car and what timing setup are you tring at what boost levels. To high of boost with too far advanced timeing on the wrong octane = knocking aka big trouble. If you have oil now dripping from under your car you probly did some damage to either a turbo oil line or to your oil pan gasket with blow by..... you hope its blow by and not blow through from running the wrong octane fuel in your car. Either way sounds bad and your not going to get much help from us without any of the basic info we ask for.