To raise a few eyebrows on the subject. Have no opinions, just the facts. Last place I worked before retiring had about 900 OTR rigs, running N14 Cummins power. When I started driving there, oil was dropped at 12k miles. This gradually grew to 15k, then 20k. Later it was chassis lube/inspect at 15k, drop oil at 30k. By the time I retired it was lube/inspect at 20k, drop the oil at 40k. Samples sent to lab at each drop, lab report forwarded to Cummins. Cummins gave the ok for warranty purposes. Used Rotella & Delo oils. Don't recall any engine failures while there. Consumption wasn't excessive, personally for first 300k wouldn't have to add between drops,later had to add a gallon at around 30k. Usually make veteran drivers take a new one off the lot at around 450k, assign the older units to new recruits, replace at around 550-600k. By that time rookies would have a track record, get a new rig. Willie
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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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