Welcome to the Group BadDNA!
Filters, you best bet is to get one from Cummins. there much cheaper then the dealer, and there the exact same thing.
Look in the links section of this website and look up Geno's garage, they can sell you filters cheaper then just about anywhere. Plus they have the better cummins filters the dealer don't sell.
For oil you can't go wrong with Shell Rotella T 15w40. I buy it by the case, enough for 2 changes. (it holds 11 quarts when you replace the filter). Thinking about Synthetic oil for the motor? to a search on Amsoil and you will find more then you ever wanted to read.
For an oil filter wrench, if its an auto, I would recommend getting one of those strap wrench's you see at Sears, you know the one that looks like it is made of a rubber fan belt.
If its a manual, a standard metal band type oil filter that can pivot will work just fine.
Do you have any records on what maintenance has already been done? Might think about flushing the Brake fluid, Changing the Power Steering fluid over to Valvoleen synthetic, Flushing the Cooling system, or even servicing the auto trans. How about the Rears, Think they have ever been changed? Might be a good time to switch them over to Synthetics.
Originally posted by BadDNA
My truck is just about up for its first oil change since I've owned it. I've never trusted anyone to work on my vehicles before and I'm not about to start now. What oil/filter do you all recommend? Any "gotchas" I should watch out for? At 50k miles anything else I should be changing or looking at while I'm underneath?