I had a '91 s-10 for stinking 10 years. I bought it used with 98K miles, sold it last year to a buddy of mine for $1000 and he's driving the wheels off of it. 212,000K+ miles on it and still doesn't use oil. The 4.3 is a nice motor. Has the 700r4 trans. I've never had an issue with it, but then again I have 4 grease guns and 4 cases of grease in the shop that get used regularly. I put new A/C, new rad, water pump, battery, hoses, belts, wires, cap, rotor, and changed the oil and filters regularly. Other than those, thats it. IMO the 4wd is higher maintenance, but I don't mind.