Benefactor
Crawl in, on, around and under your truck to see what are the most common sized nuts and bolts you'd need to work with. You may only need one or two deep sockets so don't get an entire set. Same thing for 12 pt sockets (mostly for my brake calipers). Don't worry about specialty tools unless you know they are worth taking. They can make a job much easier and help alleviate the stress of a breakdown situation. Locking hose clamp pliers are ones that come to mind for my truck.
Depending on where you're going, duration of the trip, and who else is going with you can also help determine what you need to bring. Everyone in the group doesn't need to bring a socket set while the only guy with a multimeter leaves it at home because of space. Coordinate with them, or check with someone driving the same vehicle as you (if you're in a club), and figure out your spares and tools.
Get a workshop manual and keep it inside the vehicle when you're not studying it. You may not be able to fix something, but someone else might be able to with the aid of the manual. You can also add notes for wrench sizes that you'll need before the job starts.
Regular vehicle maintenance combined with pre & post trip vehicle inspections and daily trail inspections can really catch a small issue before it becomes a big one. Don't wait until your serpentine belt breaks on the trail to replace it when it should have been checked and/or replaced before you left the house. No one wants to be "that guy" who is never prepared or is always breaking down. You may have a hard time finding someone to wheel with because of that.
Depending on where you're going, duration of the trip, and who else is going with you can also help determine what you need to bring. Everyone in the group doesn't need to bring a socket set while the only guy with a multimeter leaves it at home because of space. Coordinate with them, or check with someone driving the same vehicle as you (if you're in a club), and figure out your spares and tools.
Get a workshop manual and keep it inside the vehicle when you're not studying it. You may not be able to fix something, but someone else might be able to with the aid of the manual. You can also add notes for wrench sizes that you'll need before the job starts.
Regular vehicle maintenance combined with pre & post trip vehicle inspections and daily trail inspections can really catch a small issue before it becomes a big one. Don't wait until your serpentine belt breaks on the trail to replace it when it should have been checked and/or replaced before you left the house. No one wants to be "that guy" who is never prepared or is always breaking down. You may have a hard time finding someone to wheel with because of that.