No particular brand, as long as it is the correct grade, it will be fine. If only 15W/40 is available then use that it is still a long way better than GL1 type oil. The oil in these hydraulics is a compromise between a gear oil and a hydraulic oil, too thick and the hydraulics don't work, too thin and the transmission has a hard time......John
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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