This constant barrage requires a fluid specifically engineered to handle thermal stress, water contamination, and the high shock loads generated when the blade impacts an immovable object like a curb or frozen ridge. Additive Packages and Protection Modern hydraulic oils contain complex additive packages designed to address the specific threats faced by plow operators.
Hydraulic Oil Film Strength for Plow Reliability
A fluid that is too thick when cold will result in slow valve response and sluggish blade movement, while a fluid that is too thin when hot will lose lubricity and film strength, leading to increased internal wear and inefficient power transfer. The fluid in the system is responsible for transmitting power, lubricating high-tolerance pumps and valves, and dissipating heat; therefore, using the wrong grade can lead to sluggish response, inefficient operation, and premature component failure just when the equipment is needed most.
When seals fail, the result is external leaks that create messy maintenance scenarios and internal bypass that results in slow operation and loss of hydraulic power. Moisture is a constant enemy, so effective demulsifiers are essential to ensure that water separates from the oil rather than lingering to cause corrosion or spongy operation.
Hydraulic Oil Film Strength for Plow Reliability
Many older or generic fluids are formulated with mineral oils that can cause the rubber or synthetic seals to swell, shrink, or degrade over time. Furthermore, plows are frequently exposed to water and melting slush, which can emulsify into the hydraulic fluid if the system is not properly sealed or maintained.
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