What kind of transmission fluid for komatsu WB150 backhoe?

For the Komatsu WB150 backhoe, it is recommended to use Komatsu's own hydraulic oil, typically labeled as "Komatsu Hydraulic Oil" or a suitable equivalent that meets the specifications outlined in the operator's manual. The specific viscosity grade may depend on the operating temperature and conditions, but most often, a multi-grade hydraulic fluid is recommended. Always refer to the owner's manual for the exact specifications and guidelines to ensure optimal performance.