The likelihood of water, dust, and debris particles entering the gear box is high, whether in the factory or outdoors. Therefore, the following measures should be taken:

Ensure timely filtration to remove impurities from the oil, as these impurities act as abrasive particles causing wear and can also corrode the gear surfaces.

Water can damage oil films, leading to rust, so it is essential to promptly separate and settle the water.

Maintain oil temperature, as the oil temperature increases, oxidation occurs more rapidly, resulting in a shorter oil change interval.

Regularly inspect oil levels, replenish fuel promptly, and plug leaks.

Learn a simple differentiation method to normally judge the quality of lubricating oil.

1. Hand-rolling technique

Rub the lubricant between the thumb and forefinger, repeatedly grinding it. Good lubricant should feel slippery, with minimal residue and no friction. If you experience a noticeable roughness, like sand particles, between your fingers, it indicates a high level of impurities in the lubricant, and it should not be used anymore; replace it with new lubricant.

2. Oil Flow Observation Method

Grab two measuring cups; one containing the lubricant to be inspected and the other empty on the table. Hold the cup filled with lubricant 30-40 centimeters above the table and tilt it, allowing the lubricant to slowly flow into the empty cup. Observe the flow; high-quality lubricant should exhibit a thin, even, continuous stream. If the flow is inconsistent, with occasional large drops, it indicates that the lubricant has deteriorated.

3. Oil Drop Trailing Method

Gather a clean white filter paper, place a few drops of oil on it, and wait for the lubricant to seep through. If there's black powder on the surface and a gritty sensation when touched, it indicates that the lubricant contains a lot of impurities. High-quality lubricant has no powder, feels dry and smooth to the touch, and leaves a yellow stain.

4. Light Testing Method

On sunny days, use a screwdriver to lift the lubricant to a 45-degree angle from the horizontal surface. Compare it against the sunlight and observe the oil droplets. Under the light, a clear absence of metal shavings in the lubricant indicates good condition and can continue to be used. If there are excessive metal shavings, the lubricant should be changed.