Back in the 70's a neighbor mistook the 303 hydraulic oil can for motor oil can at a oil change during spring tillage. The 4020 started burning oil and needed an overhaul after running hard for half a day with a full pan of 303 hydraulic oil in the engine.
If you only have one quart of hydraulic oil in the pan and no motor oil yet, I would drain the pan and start over. One quart of hydraulic oil is only what $5 or $6?
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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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