Do you guys do the recommended vehicle scheduled maintenance work? My diesel F350 has about 110,000 miles on it. I took it in for an oil change as I do every 10,000 miles (or less if I did a lot of towing). They came out with a sheet full of "recommended" maintenance items, totaling $664. I use the truck mostly for towing our fifth wheel. Transmission flush 257 Power steering service (probably flush) 108 Transfer case lube change 85 Service front and rear differentials 151 Fuel additive 28 I've been doing the recommended service stuff but I'm starting to wonder. I admit, it gives me some piece of mind knowing it's well taken care of, but I'm starting to doubt myself. When I was younger, I changed my oil and put gas in. Later in life I had more money so I started doing the recommended service items. I really don't know if it's made a difference in the long run... So what do you guys do?