How difficult is it to change the gasket on my oil pan? I have a small leak from the front of the motor, and the guy I bought the truck from told me when I bought it that it has a small leak in the oil pan gasket and even gave me the gasket to replace the old one with. I believe he said you have to undo the motor mounts, remove the distributor and prop the motor up to get the pan off. Is it really that involved??