How ofton are wet bolts greased

Slowmsy; You didn't read correctly. I said I greased them before putting any weight and they took it well. I drove 70 miles and had a struggle. This 15000 lb. unit came with wet bolts and wouldn't accept grease then either. As I said and still say those bushings are not heavy enough for a 15000 lb. trailer. The bolts and shackles are fine it's the bushings that can't cut it. PS it's only cold in the winter in Ontario. It was 70 degrees farenheit in september. Before changing them I jacked up took weight off pryed back and forth and couldn't get to accept grease. When I change the bushings the were so thin I couldn't remove using bushing driver . I had to peel them out. The new ones were installed using a bushing driver and a press. I don't know of any better process than that.
Gary Wheeler from Mor/yde sure knew what I was talking about and offered me the solution. That was IS suspension and Disc Brakes. Incidentally these were the most straight up honest people I have delt with since got into RV ing I haven't had any use since I came home in April due to a Triple Heart Bypass surgery. I put a second AC unit on today and I think I should be in for an enjoyable winter