Abstract
The influence of water on the lubricating properties of the synthetic oils VNII NP 50-1-4f, B-3V, and 36/1KU-A (all based on esters) and the isoparaffinic oil IMP-10 were investigated in a four ball friction tester. The results from this study of the influence of water on the lubricating properties of synthetic oils are presented. The effects of water on the limit of operability of the oils was manifested in many specified ways. In conclusion, short term contact of ester-based oil with a small amount of water, if there is no hydrolysis, does not give any changes in the lubricating properties. But any further increase in water leads to a decrease in the lubricating properties. Hydrolysis of synthetic oils leads to a considerable drop in the level of antiwear and extreme-pressure properties.
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