Yah i just did a complete tune up on my unlces truck the guy has never changed the fluids in the 10 years he has had it. The trany fluid was black, oil was horrible, rad fluid was brown, diff fluid, well i gagged when i popped the cover off[:'(] Some people shouldnt own vehicles, especially trucks.

But yah if your doin lots of hauling with trucks you should change fluids before they suggest you should cause you are exposing that vehicle to extreme conditions that the usual person doesnt expose the vehicle too.

Oh and how is the Dakota on gas? Im thinkin of buying a smaller city truck and im thinkin either a dakota or tacoma.