That's true on a lot of oil pans, differential covers, and transmission pans. A special gasket sealer is used and is less likely to leak.
November, 14, 2012 AT 6:47 AM
They use silicone sealer instead of a gasket it was sealed from the factory with saturn silicone.I. Recommend using permatex ultra grey to reseal it thats what I used to seal my 1999 SL2 oil pan and timing cover and no leaks.