I am winterizing my ski. How important is it to use loctite 518 on the o-ring when changing pump oil? I could not find any at the auto parts store. Will I have to do over again if I don't use it ? Also how much pump oil goes back in. I have a 6 oz bottle and used about half but I cant see inside the cone to see the bottom of the threads. Can I use any kind of casket sealer or does it have to be loctite. :cheers: