I have poly bushings on the front sway bars in my Grand Cherokee. I did not get the ones fitted with zerks for greasing. What is a good grease that I can apply to the bushing one time and last a long time?
I've used the #221 with very satisfactory results. If looking for a grease locally, the key is finding an aluminum based grease. I think that's the reason marine greases work well, since they tend to be Al based. Bob did a simple test using a lithium versus aluminum grease and the results convinced me to stay away from a lithium grease for this application.