Nothing.
Good truck, hard to believe American engines are actually starting to last (Ford makes the engine).
Actually the 2.3L engine in this truck is an early version of the Mazda-designed 2.3L (and 2.0L, same block) in the Mazda 3, 6, etc :) So that explains why it's lasted!
My 1997 B 2300 currently has 430 thousand Km (about 270 miles) on it! It runs great, starts on the coldest mornings, and sees regular use as a truck (like hauling a cubic yard of topsoil twice a year).
It has had the following repairs/parts:
4 sets of brake pads
1 set of brake shoes
4 ball joints
1 universal joint
3 sets of spark plugs
4 sets of tires
6 pairs of wiper blades
It still has the original clutch, drums and rotors etc...What a great little truck!!!
I have a 1997 B2300 SE extended cab (I bought it with 19,000 miles on it). I have 100,000 miles on it and have only changed the oil regularly (6,000 miles). I am going to change the timing belt now since it is recommended to change that at about 105,000 miles. Great reliable economic multi-purpose vehicle!!
I bought this truck used. (just turned 160,000 km this month)
Right now I'm getting 18 mpg.
In the summer I get about 23mpg.
Not good gas mileage if you ask me, even though it's a 4 cylinder with 8 spark plugs for better mileage. (what a crock!)