Greases are used to reduce friction and, as a result, to reduce wear of parts in vehicle components in which it is impossible or impractical to create oil circulation. Grease easily penetrates into the contact zone of rubbing parts and is held on their surface. The main advantages of greases are a wide temperature range of application compared to motor oils, the ability not to flow out or be squeezed out of unsealed friction units. The disadvantage of greases is the retention of mechanical and corrosive wear products, which increase the rate of destruction of rubbing surfaces, and therefore worsen heat removal from lubricated parts.
When choosing greases for a specific vehicle component, one should know their physical characteristics, the effectiveness of lubrication of rubbing surfaces and compatibility with materials in contact with the lubricant.
WARNING: Greases of different compositions must not be mixed with each other due to the possible change in their physical characteristics (thinning and lowering the dropping point).
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