synthetic Valvoline Axle grease mixed with wd-40. it makes it so smooth and slick. Like VELVET! you need a thick grease to keep dirt OUT. ALL grease attracts dust, dirt. It's job is to displace it like wd40 displaces water. I put it on the housing, torque ball and all the way down the torque tube. Works better than the "special" suff and cheaper too.