Well since I got my truck in the air a little you can really see the underneath and being it is 10 years old I am thinking an hour or so with the powerwash and spraying paint or something under there what do you guys use undercoating or paint?

 

The new models came with no protection under the rear wheel wells, I used some permatex undercoating spray and it has worked well.

 

You need to use undercoating where necessary, but in other places where you might wanna show off something just paint it. Or if ya got some extra cash you can buy skid plates and other things to hide some of it.