Driveshaft, good point. My only issue is that the degree of raggegness can easily be seen on a chain. Seems the older (11xx) FD also had some built in inspection/maintenance. The new FDs on the r12 do not have a drain plug, nor do thay have the magnet to collect metal.
These units should not be sealed for life, and there should be a way to inspect (easily) so one can plan. If I missed this for the R12, please advise.
PS> I know that the fluid can be swapped, but what about metal bits, and if the dealer finds out I had the unit opened up should the FD later fail, have I voided the "lifetime" warranty?
Have router, will split lanes for food.