recently bought a 04 2500 cummins with 110??? miles. would like to change all fluids out in the truck so i know what kind and how old they are. would this be a smart thing to do or just a wast of money. already changed the oil and the antifreeze looks good

If you have any doubts of the care taken of the truck, it cant hurt any thing. It should give you peace of mind if nothing else.

I would change them all including the coolant and thermostat.

Engine oil and filterCoolant and ThermostatPower Steering Fluid (Flush both the steering box and the hydrobooster)Brake Fluid (this includes disassembly of the callipers and cleaning them out)Transmission Fluid (Auto or Manual)Gear lube in the axlesThen you know you started with a clean slate. I would allow extended drain times for all fluids and for flushing I would flush till the output is clean too. As for brakes I highly suggest disassembly of the callipers because just bleeding pushes all the debris in the bottom of the calliper and later on you'll have dragging brake problem. Don't ask how I know...

moapar said what i always do..engine..trans..coolant flush..new water pump..new colant..new t-stat..new belt...flush power steering fluid...new brake rotors and pads..front diff's...rear diff's...t-case..air filter...fuel filter{until the the fass gets installed}...run the valves to .08 and .017...that way everything is changed and there is no wondering hhhmmm..wonder if this or that was changed on a regular basis...my ..i use synthetic.

Sounds like good advice thanks to all who replied better safe than sorry