Hey guys. Just got finished swapping a crankshaft in a Kohler SV730-0011 and I'm trying to decide on what sealant to use. And also what is good to clean the mating surface that leaves no residue? I've heard carb cleaner does leave a residue but what about rubbing alchohol? The only sealants I have are permatex ultra grey and form a #2 non hardening. I've used the form a on valve covers and it done a heck of a job but I've never used the ultra grey. This engine did not have a gasket on it just sealant but I wanna make 100% sure it seals before I put it all back together and on the frame.