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Can Engine Oil Replace Hydraulic Oil?

1 Answers

CalvinAnn

07/30/25 5:52am

Engine oil cannot replace hydraulic oil, as doing so may damage the vehicle. Here are the relevant explanations: 1. Different purposes: Each type of oil is formulated for its specific usage environment and purpose. Mixing or using oil beyond its intended scope is not recommended. The concept of engine oil is relatively broad, as all lubricating oils can be referred to as engine oil. Engine oil, short for mechanical oil, consists of base oil with some antioxidants, and its viscosity can be selected, with 100# being the most commonly used. 2. Hydraulic oil: This is the hydraulic medium used in hydraulic systems that utilize liquid pressure energy. It plays roles in energy transmission, system lubrication, corrosion prevention, rust prevention, and cooling within the hydraulic system. Due to the different properties of engine oil and hydraulic oil, engine oil cannot replace hydraulic oil. Most importantly, the quality of hydraulic oil significantly affects the operational reliability and service life of the hydraulic system.

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