Gulp! Good question here: I agree with Gregg 100% of the time, that's why I do replace all fluids, BUT I never let my bike's "refills" go the limit... (meaning: the books reads 8,000 miles B4 an oil change, I will never go beyond the 3,000 mileage, I change out everything way b4 what the books reads..... rear gear fluid, gets changed every oil change, anti freeze fluid b4 every riding season..In short I guess what I'm saying here, is that I never go the full limit, always B4 it's really due............ All my cars are the same way, as well as my service trucks when I was in the heating/plumbing business.... I keep a running list and mileage of every, repair , fluid change, OR anything I have done to my vehicles.....Always way B4 it's due....I'm lucky enough to have a garage to work in with much of the tools that I need to service my own vehicles....Just yesterday I jacked up my trike, and shot a couple of pumps of moly grease into the the two grease zerks fittings, again b4 i start to ride....life is good!I am recently new to this forum, and may be misinterpreting. Gregg mentions following the service intervals in the manual and I am assuming that means all service intervals, however you mention you change oil (and filter?) before every long trip; filter yearly, coolant yearly and final drive yearly and in my manual these are not the service intervals so don't you mean you completely disagree with Gregg?