I think SPC recommends grease with Moly, but when I've used it, the grease separates and leaked out of the BJ. I've been using simple red-n-tacky ngli #2 for about 20k now on this set of arms and no play at all and no leaking. I put a something like 5 pumps of grease in after every long trip on unimproved roads/off-road, and at any oil changes.