We purchased this rig new and now it has 52,000 miles on it, the dealer wants to do the driveline maintainence on it, trannny, diffs, tc, etc. for just $500.00! We have only pulled our pop up camper with it about 5 times, so it has not done much towing in its 52,000 mile life. Is this something that I should do? If it is are there cheaper alternatives out there, quick lube shop, local mechanic etc. Should I do all of it, or just some of it like just the tranny, or some other combination?