lube choice DEPENDS on which model/brand of stab jacks are on the stream...
1. >>>the 'bal' light trailer stab' jacks (used on safari/i'nationals/clouds) require...
any light 'spray lube' on the exposed screws/threads, choose yer favorite and spray at will.
2. >>>the 'ultra-fab' electric leveling jacks (typically model UF-5000 power twin) have GREASE ZERKS...
and require any standard moly grease injected till it ooozes out the excess/exit port.
do NOT spray stuff externally onto the threads of the ultrafab, it will muckup the grease that's inside.
the majority of low lying 'squEEEaks' noted INSIDE a stream are from the subfloor/frame attachment.
although all the external joints and metal stuff can squeak 2.
all of the true things that i am about to tell you are shameless lies. l.b.j.
we are here on earth to fart around. don't let anybody tell you any different. k.v.