[RobSC]

I recently went through this on my coach too.  In addition to the documented zerks, I had (2) zerks on the front axle sway bar bushings.  The rear drive axle sway bar did not have the zerks, but did have (2) holes already tapped.  I went ahead and installed new fittings in the rear.

I used a silicone based grease for these rubber bushings as petroleum grease can cause the rubber to deteriorate.