Posted by sotxbill on January 28, 2021 at 16:16:05 from (104.5.24.112):
In Reply to: Marathon oil posted by 4520bw on January 27, 2021 at 12:36:56:
This is why there was so much testing done during this period to meet the 60 to 100 tests to meet all the different manufactures oil specs... as oil was.... "all over the place" As these tests evolved and oil standards were set, oil starting having to meet specs, and the world changed. Today the new api specs now account for the 100s of test and based on its api rating, you can get a performance level you can count on. Also oil additives have improved so that modern oils run rings around the old parrafinic oils of the 60s and 70s.
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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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