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What type of lubricating oil is used for hydraulic retarders?

1 Answers

KeiraRose

07/30/25 8:58am

Hydraulic retarders use specialized hydraulic transmission fluid, also known as Automatic Transmission Fluid (ATF) or automatic transmission oil. This fluid serves as the working medium in vehicle automatic transmissions composed of torque converters, hydraulic couplings, and mechanical gearboxes, utilizing the kinetic energy of the liquid to transfer energy. More details about hydraulic transmission fluid are as follows: 1. Definition: Hydraulic transmission fluid is essentially a high-quality hydraulic oil with higher viscosity index, thermal-oxidative stability, anti-wear properties, and superior cleanliness. 2. Characteristics: It features appropriate viscosity and excellent viscosity-temperature performance, good anti-wear properties, relatively high thermal stability and oxidation resistance, good low-temperature fluidity, and effective anti-foaming properties.

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