Hey JD, My dad had a 79 GMC with the 5.7 diesel. We had relatively good luck with it compared to some others. It had the 3.40 rear axle ratio, which seemed help it out some although it did cut the milage down some. (best of 24 mpg with 19 or 20 normal for everyday driving) Dad also added a large fuel filter to it, a glass box one like many JD tractors used. Did blow the head gaskets once at 70,000+ miles. Despite it not being rated for towing, we sure hauled alot of farm machinery around with it. I also did a fair amount of hotshotting around with it when I was young. (could squeal the tires pretty good) Finaly gave up the ghost around 100,000 miles, when an olds gasser was swapped in it was about a 10 mpg truck.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let�s make one more addition to our series on hydraulics. I�ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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