General Information On Gear Lubricants
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Gear lubricants for manual transmissions must conform to the following requirements due to the different transmission designs with considerable variation in loads, temperature and speeds.
The qualities of a recommended gear lubricant are:
- Load carrying capacity, i. e. high-pressure resistance.
- Noise reduction.
- Non-corrosive to various metals.
- Non-foaming.
- Non-separation of additives at operating temperatures.
- Non-sludge forming.
- Prevention of swelling, hardening and shrinking of seals.
These properties are already provided in manual transmission oil by:
- High-pressure additives.
- Corrosion inhibitors.
- Oxidation inhibitors (inhibitors which limit or prevent chemical reactions).
- Anti-foaming agents.