After an Engine Rebuild I have a very small oil leak caused by (I think) a cracked or porous Oil Pan. The Oil Pan was replaced during the rebuild but may have been defective (it was a used Pan) or perhaps it was set down hard during the process and cracked. I really can't tell because now that it's installed in the Boat you can't see under it. Before coming to this conclusion I removed the transmission and the rear main seal showed no sign of leakage. Anyhow, I suspect this because with out running the engine it leaks just sitting there. As a test the engine was not run for almost 3 months and it leaked almost a quart of oil into a plastic tray I installed under the engine. The proper fix is to remove the engine from the boat and install a new pan but trying to find a facility that will remove the engine is problematic where I live. I'm thinking of lifting the engine up high enough while still in the boat to be able to apply Flex Seal Liquid Rubber Sealant all over the Oil Pan. The manufacturer states that " Flex Seal Liquid can withstand temperatures from -80°F to 350°F" and typical engine temperatures do not exceed that. But, before I go thru the exercise of lifting the engine I was wondering if any one else has used this product and if so what were the results? Any other suggestions?