I have done nothing but replace the battery and change the oil.
The truck has 154,000 on it and needs no oil between changes, I put a 1,000 cold crank amp. battery in it, it takes just one battery where as the newer ones take two. I have had no problems starting it, it started two mornings that were -15 belowm it wasn't even plugged in.
The truck is very cheap to operate. I checked the mileag,e it was getting 26 miles per gallon which isn't bad for a truck with a 1 ton frame and gear plus it's a 4X4.
I am very happy with it.
Wish I could find another one!
It drives and handles great.
Dodge Ram 50 Sport 1988 is a
good looking body.