Hi delvallejr-
I've been using Tri-Flow on all bearings, ball links and slider. It claims to have petroleum distillates. I know it's supposed to be a no-no on plastic... no problems yet! Haven't noticed any swelling or softness. I had been using either Tri-Flow or Trinity oillite lube on motor bushings. In the process of installing brushless esc's/motors and HH gyro. No more bushings!