with nothing to lube them at all... i have 3 jugs of fuel through my 18ss+. they are starting to show light wear now.
i only disassemble them to clean them if they get mud packed into them. the are dusty after most runs.. but thats it.
i would rather find double ended cvd's for all the shafts personally.. but i only see the single sided ones. wonder why??
is it a length change when the suspension flexes or what?
i know full size cars use double ended cvd's with a splined shaft to allow length changes. that system has to be better than dog bones on one end. would keep things together better under arm breakage situations too.