I just tried to schedule the valve adjustment with the dealer. The service rep told me that unless the valves seem to be making noise they don't adjust them as routine maintenance. Does this make sense? Someone mentioned that the adjustment should be done at 60K miles intervals. That seems like routine maintenance to me. I have had excellent service from this dealership in the past so I do tend to trust them.

ttreat
95 T-100 SR5 4x4
Pretty much stock, except for the goofy oil pressure gauge the previous owner installed.