Whenever I buy a used car or truck I always swap out oil, tranny, diff, and check the antifreeze. Also fuel filter. I had 110k on my 09 and used champion copper plugs from napa $30 for 16 and small shop put them in for $75. I miss my ram boxes I had on my 00 but traded it Monday for a 13 to have the 4x4. After my plugs I was getting 18 to 19 mpg on the highway and avg 15 to 16 mixed.
2014 Black Express, 4.5" Maxtrac lift, Ballistic Razorback's 20x9, 35x12.5 Federal Cougaria MT's, DeeZee tailgate assist, K&N drop in filter, magnaflow 16" welded in, Diablo Trinity, 20% tint on the front and 5% on the rear glass, AVS Smoked Aeroskin, HID 3000k fogs, 6000k HID's in the projectors.