One problem related to engine oil leaking has been reported for the 1996 Buick Regal. The most recently reported issues are listed below.
My car started to not start after being driven and shortly after did not want to start in a simple idle. Somehow fuel has been getting trapped in a pressurized line and I'm having to release the fuel out. Oil leaked into the spark plugs caused a pilot flame. I have read multiple accounts of this happening to that specific make and year as well a few of the other 90 models. Every account says it is a flaw in the engine and fuel system.