I will probably get push back on this.. but the right stuff sucks.. install a healthy beat let it sit for a few days and cut it open with a razor blade it's full of hollow Pockets from the aerosol that used to push it out of the can.. I think it should only be used in a pinch because it dries very quickly.. however I have had numerous issues using the right stuff.. especially when trying to use a vacuum pump.. my Motors never leak oil only air.. I would tape everything up and use a heavy grade window silicone.. you can get it at your local hardware store.. and you apply it with a caulking gun.