I certainly would not use ANY petroleum based lubricant or lubricant containing ANY petroleum products on rubber ( like those shock bushings )
I recommend a good, high quality lubricant. I personally try to stick to the stuff LPS makes.
http://www.lpslabs.com/product_pg/lu...Lubricant.html
For the shock I think their Force 842 would work
I use the LPS1 on my firearms
Dry film PTFE is good too
Problem with wet oil or grease is it dust and dirt will stick right too it.