WD-40, would work fine.
But personally, I do not see (or rather, not feel) the heat. So I just wrap my pipes. Then spray a flat black, high temp over my chrome ties. Well actually, over those metal ties, areas where I needed a little duct tape, as these pipes do not wrap like a car engine (nice and neat). Using the standard fiberglass wrapping (to keep heat down) Is certainly my preference.
Granted, I don't use on my 1/7, 1/8, & 1/10 nitros. (which I should, as a small kid may run over and try to pick up those cars). My niece & nephew I can say do not touch, but if a small kid 200+ feet away from me, touched them (if car turned over, or stalled, etc... I would feel bad, that they burned themselves (due to their parents not watching them.........). Granted, not my fault....
EDIT:: I do mean wd-40, after pipes cooled of course. Pretty much most oil lubricants will work fine on stainless (for sitting around, not being used) once heated, you are going to burn off any of those oils. Same with all the oils, others recommend(ed)