What they all said. Right down to the Anti-Seize/Never-Seize stuff. Just a moderate amount goes a long way. I use it on a lot of fasteners and I'm still using the same can my dad bought in about 1970! Little dab'll do ya.
One trick I've found for some of the easier to access bolts, if the speed nut snaps off when you try to loosen it. Before you break out the cut-off wheel, try grabbing the threaded end of the insert super tight with a pair of Vise-Grip type pliers.
You might slightly bugger the threads on the bolt, but at least it'll come out.
Sometimes the bolts jam up due to rust, some times they just spin because the threads inside the insert are stripped. Either way, with a little penetrating lube and judicious use of clamping pliers, the bolt should still come out without surgery.
Sorry if that sounded confusing. It's not really. You'll see what I mean if you run into a broken speed nut.
Paul