I use it daily on a very large Postal Rural Route. Today, took it down for a transmission problem. Could be the fan clutch the mechanic told me. Placed 193,800+ miles on this great little 4.3 V6. It has always had plenty of power, the truck is fast for the small power plant. Servicing through the years (I bought it brand new); all problems were out of my pocket, even when NEW! Replaced the timing gear once when it jumped time (one notch on the gear); been running ever since. I replaced the transmission at around 130,000 +. No problems until recently when it had a leak from manifold fixed. Happy with Truck, NOT with Dealership.