So you get a new truck yet?? Haha
As mentioned above, the cost of future repairs is significantly different If you do all your own repairs or not too.
Take the $ 5k you may spend on repairs the next year or 2 ? Add that to the $4-5k ish the truck is worth and put $10k down on a $20k low mile f150 and reset the clock back about 200k mi from where you're at now.
Or if you're commuting big miles and have decent confidence in the old truck, use it as a commuter beater and get a newer truck for Sunday's and road trips. Get more $$ out of the old one and have a backup and a newer truck for when you need it.
