jefx

I also don't use lock tite on my wheels, and I've never heard of a specific amount of ft/lbs of torque for tightening them down. It would be a real hassle to have to drag out the torque wrench just to tighten the wheels. Just crank them down good and snug, but not so tight that you crack the rim.

I clean my filters with Dawn and water. You could buy some filter cleaner like the stuff K&N sells, but it's pretty much just watered down detergent. Or just replace them, "when in doubt, throw it out".

I use my 60 gallon Craftsman air compressor to air it down. As long as the air pressure isn't blowing parts off your truck, then don't worry about it. Air won't damage it. You'd have to have one heck of a compressor to build enough pressure to damage your truck.