We now have available the same polyurethane compatible grease we supply with our upper arms in a tube to load into a grease gun and charge through the zerk fittings. This is the BEST grease to use for any polyurethane bushings from upper arms to leaf springs. It contains versatile water-proof, non-melting Teflon and is formulated to seal out water and to lubricate under the most adverse conditions. It’s superior adhesive and extreme pressure qualities, combined with it’s urethane compatibility makes it the only one to use.
Many greases are not compatible with polyurethane bushings and can actually cause squeaking and degrade them. Using other greases will also require more frequent service as they will break down faster.
When using a grease gun on Toyota upper arms, make sure to loosen the frame bolt slightly to allow the old grease and air to purge out. Then re-tighten to specs.