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Schaeffer 315 Simplex Supreme Tractor Hydraulic Fluid is a universal, extreme pressure torque converter fluid that is designed for use in most farm and industrial tractors. Blended with superior polyalphaolefin synthetic oils, 100% paraffin base oils, a high viscosity index and carefully balanced additive package, Schaeffer 315 is engineered to meet the widest possible range of equipment manufaturers' performance requirements, including John Deere J20C. Featuring excellent oxidation and thermal stability, Simplex Supreme significantly reduces wear and scoring on gears, brake noise, and hydraulic operating temperatures. Simplex Supreme THF meets and exceeds the service make-up and refill requirements of transmissions, differentials, final drives, hydraulic, power steering and wet brake systems of this type of equipment, especially those that employ a common reservoir or sump. Boasts excellent compatibility with all types of seals and elastomeric materials.

Schaeffer 315 Simplex Supreme Tractor Hydraulic Fluid

PriceFrom $12.00
  • This fluid has been tested for over 5 years in both customer experience and extensive laboratory analysis comparing additive levels and viscosities and proven to be a fully compatible replacement for Polaris Demand applications with a Front Differential or Hilliard Clutch. This applies to ATV (Single Seat) and Ranger (side-by-side) vehicles.

  • Due to Schaeffer providing this fluid in large 2.5 gallon sizes and most ATV/UTV applications requiring far less, we bulk order the fluid for you. Purchase sanitary unbranded 1 quart oil bottles and 28mm caps fill with 1 quart of Schaeffer 315 Simplex Supreme and ship to you in 1 quart sizes for your convenience. This saves you from needing to purchase a 2.5 gallon jugs or 5 gallon cases at a time. 

    (Front gear case in a RZR 900S takes .23 quarts for reference)

    A quart will get you 4 front differential services.

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