I worked for a major truck leasing company for 40 years as a tech in the shop. In the late '80s, we started 'blending' the used oil back into the fuel tanks at oil changes. This was before electronic fuel injection- just the old mechanical style. We had a machine the that sucked the oil out of the oil pan. The oil went thru a couple of filters on the machine as it was pumped into the fuel tanks. The tanks were supposed to be almost full when we did this. The whole idea was to save fuel for the customer, and oil disposal costs. But on the whole, it did not work well at all. The truck fuel filters would need changed prematurely, and much more often. The fuel filters would be coal black-and black equals dirt. After a short time the idea quietly got abandoned. With electronic fuel injection, tolerances are much tighter and using used oil would never work. Mark.
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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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