Hello, I am going to be putting new ball joints and u joints in the dana 44 axle on my 1978 chevy k20. I am going to use the mystik grease to repack the bearings. I dont know if it has ever been done. The grease that is in there now is very black and gross. The u joints are from spicer and they are sealed for life. I use my truck for plowing in the winter here in NY and it can get pretty cold. I know this grease is good down to -10f. Do you think that is adequate for the wheel bearings in cold temps? When i start plowing i start with my driveway so i have no driving distance to warm up the grease. How long does bearing grease take to warm up? I am also going to use this grease to lube my rear u joints. Lastly i would like to use a moly grease for all my ball joints. I have a large grease gun that is going to get the mystik grease. I have a small grease gun that takes those small grease tubes. What would be a good grease for all the ball joints? Thanks