Here's a take on polyurethane vs rubber.
Includes, dirt, flex and drilling holes in rubber bushing.
He tends for: poly daily driver, rubber off road (except where subjected to oil & grease).
https://www.youtube.com/watch?v=85zwopG9E6E
I appreciate you posting this. I've started replacing mine. Most are rubber, as you suggested.
I like rubber bushings. Every Poly version I've tried crumbles to dust at the 7-or-8 year mark.
Quote from: AMC of Houston on July 25, 2020, 01:32:37 PM
I like rubber bushings. Every Poly version I've tried crumbles to dust at the 7-or-8 year mark.
In what environment range?
Central Texas - driven about 1,000 miles a year. Issue I think is age; not miles.