Stig got you beat on truck age, My old plain jane F-250 Ford XL is 21 years old even a manual 5 speed transmission. 223k miles. Not that there was anything wrong with the factory CD player I did upgrade the stereo. Just got back from a trip to Mt Rushmore & Crazy Horse to Sheridan Wyoming hauling a trailer to pick up two Kymco's a week ago. Thankfully the prior owner did opt for cruise control and stereo upgrade but otherwise rubber floor mats and crank windows bottom tier pkg. Since it's a crew cab I took out the back seat and built a bed for the Collies. The Collies usually go on all my excursions except on the scooter. Got to love old inefficient American trucks. Mine does go through fuel like it's a charter member of OPEC with it's V-10.
Mine's a six. Very healthy appetite! (Never checked the MPG's - I'd only cringe)
I looked at putting new plugs in - but can barely see them - let alone get a wrench on all of them.
Did put in a new battery and new air filter.
Blew out the brake lines 2 yrs ago when backing out of the driveway. !! 3 mins later I'd been killed. Shop said, "What?! - You haven't had the brake line kit put in, yet?!??" $800. Since truck was a gift from my FIL - paid the $ and didn't complain. Couple hundred for a new L front ABS last year.. Otherwise - flawless....except needs a new "clock-spring" in steering wheel to fix the airbag light, $775.
Guess I forgot those things....
FIL put heavy duty tires on it so it rides like a coal wagon. My 1987 Crew-cab w/full 8' bed Silverado which I drove daily for 25 yrs at work - had highway tires and rode like a Buick.
Stig