If you have purchased an
oil pan that has welds and is not one piece, then i suggest you do the following before you install it.
Please note that this thread is not for the intention of bashing the manufacturer of my
oil pan.
I purchased a rather expensive Aviad
oil pan for my 427fe. I've had the engine in for a few months now, but i only put oil into the engine about a month ago. There was a bad leak that i assumed was coming from the oil pan drain plug. However, i drained the oil around a week ago to inspect the oil drain plug and all of the threads were perfect on the drain plug bolt and in the pan. I put sealant on the drain plug and reinstalled it. This evening i added a fresh 9 quarts of oil to the engine and about 5 minutes later a puddle started to form on the ground. My car is on jack stands currently, so i was able to locate the leak by sliding my head behind the fender skirt and looking over the frame rail at the passenger side front of the pan where the return port is for the puke tank. Sure enough, the oil is leaking from the weld around the port tube.
So, my suggestion for all of those purchasing such a pan is to fill it with water or oil and test it for leaks before installing it on your engine.