- Oct 5, 2020
I am getting ready to install a pair of Yukon Hardcore Extreme U Joints into some new Chrome Moly axle shafts in my Jeep TJ rock crawler and the U Joints don't have needle bearings, they use a 4140 steel cap that ride on the 4340 chrome moly body. Yukon recommends copper anti sieze for lubrication on the bearing caps. Is this a good idea? Is there something better for water resistance and extreme pressure? I currently use Lucas red and tacky in most of my applications. The U Joints have a flush fitting on each cap that is greased with a need grease fitting. I will only be having these engaged off road without any high speed driving.