Another oil that works well is 3 in 1 Electric Motor Bearing oil in a blue can. It's the correct 20 wt and the can has a small spout that fits the SA oiler hole. I suggest taking the hub apart and cleaning it. You don't have to take the guts all apart after you remove them from the hub. A thorough dousing with a spray can gun cleaner will suffice. The last one I took apart looked like some one had put grease in it. Shifts perfect with 20 wt oil in it after I washed out all the gunk.