Generally hydraulic oils have more anti-foaming agents, possibly different or more anti-wear agents, which can be a benefit for most hydraulic systems. Also a few like Hytran can keep a relatively large amount of water in suspension, thereby insuring the pump/valve has at least some oil lubrication rather than occasionally ingesting only water. The motor oil detergents are not a benefit, nor are the additives which neutralize the combustion by-products. Personally I substitute Low-Vis Hy-Gard for SAE 10W hydraulic oil, and as you already do, use standard Hy-Gard for situations requiring a heavier hyd oil. But in a low pressure, lower flow system, most any oil will work satisfactory.
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Today's Featured Article - Show Coverage: Central Illinois Strawberry Festival - by Cindy Ladage and Janna Seiz. Every year the coming of summer is highlighted by different events for different people. For some, it is heralded with the end of school, tilling the garden, or completion of the planting season. To us, connoisseurs of find food, antique tractors, farm toys, crafts, and downright fun, the annual Strawberry Festival means summer is here. Every year, in Carlinville, Illinois, the Macoupin County Historical Society and the Macoupin Agricultural Antique Association team up to fill th
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