| 摘要 |
A fluid power vehicle steering gear (10) comprises a tubular housing (22), a fluid (34) disposed within the tubular housing, and a member (20) movable relative to the housing in response to a change in the fluid pressure in the housing. The fluid comprises a mixture of a base oil and a grease. The weight of the grease in the mixture is about 0.1% to about 5% of the weight of the base oil in the mixture.
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