Took off my oil pan and main bearing cap so I can get the rear main seal in and out without any issues. While looking at it, I noticed that the rear main seal will seal the output shaft and the oil pan gasket seals around the main bearing cap. The issue is there is a gap between the two which is sealed by the main bearing cap metal to metal organist the engine block. Can this mating surface leak? Do people put sealant between the main bearing and engine block?
