What are your most useful specialty tools working on a 20 yo truck?

Nearly every type of 10mm socket you will need. I have this set in 8mm, 10mm, 12mm and 14mm =)

GearWrench KDT80319 10 Pc. 1/4" and 3/8" Drive 6 Point 10MM Socket Set

 

Will "fix" anything.

 

I'm surprised no one has mentioned the most important tool of all, specialty or otherwise...

PROFANITY!!!! I don't care who you are, or how long you've been wrenching. No matter what your skill & experience level, profanity is your most important tool!

 

A high tolerance for pain and disappointment.

 

Pry bars, hub puller, extra jack, test light,Fuel pressure tester, oxy/acetylene torch, gallon container of brake cleaner, lisle seal puller, torque wrench, wobble socket extensions, hose pliers, long reach 45 degree needle nose, right angle screw driver....

 

This is how I do it.

 

On a 20 year old truck; Ingersol Rand 1/2" air impact wrench and a good set of shallow and deep impact sockets. Sheer age will glue a lot of stuff in place.

 

I've got couple scissor jacks that drive using a 19mm socket....
many uses.....and with a drill-socket....has saved the day many times....to spread or compress......
especially if your a lone wrencher.........

 

Works on multiple makes and models…..