Hello all, Ok this should be the least of my worries but after 2.5 hours and and standing there watching my mechanic and assistant do battle with the X they managed to replace the outer cv boot (with tips from this site i must say, so thanks) last query I have is what I read in the tipsNtrick diy :

"TIS recommends you caulk the axle flange nut to the hub to prevent moisture and dirt from going in.
I used RTV high temp black silicone to seal the outside of the axle flange nut to the hub. "

caulk the nut to the hub - i guess that mean't coating it and the treads with sealant and then securing to hub? so i will have to just coat the outside of nut now and where it sits on the hub BUT can I get away with using regular silicone or with that just fall off due to high temps?