Is gear oil dark in color and heavy in odor a sign of poor quality? Can't look at it that way

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Is gear oil dark in color and heavy in odor a sign of poor quality?Can't look at it that way

Engine gear oil, is a higher viscosity lubricant, it is specialized in the protection of transmission of power parts, so in the contact surface between the teeth and teeth, can form a continuous tough oil film, that is, with a high oil, can make the transmission between the parts to maintain the toughness of the boundary oil layer, to ensure that the transmission of the parts of the wear and tear is small, and can prevent wear.

Gear oil to petroleum lubricant base oil or synthetic lubricants based on the addition of extreme pressure antiwear agents and oily agent modulation from an important lubricant. It is used in all kinds of gear transmission devices to prevent tooth wear, abrasion, sintering, etc., to extend its service life and improve the efficiency of power transmission. And hyperbolic tooth load up to 2942MPa, in order to prevent the oil film rupture caused by tooth wear and abrasion, in the gear oil is often added to the extreme pressure anti-wear agents, commonly used sulfur-phosphorus or sulfur-phosphorus-nitrogen type additives.

And, the color of gear oil for large vehicles is also divided into two categories, dark yellow or dark brown-red, which is in addition to the base oil has a relationship, but also with the selection of additives has a very big relationship, the market has its own brand of composite company additives have their own brand characteristics, so the gear oil color and smell will be more diversified.

For large vehicles often used in heavy-duty gear oil, for heavy loads and extreme pressure requirements, in general, will use a part of the viscosity is greater, better bearing capacity of a class of base oil, and this class of base oil will be due to the origin and production process of different colors and smells are different, the color and smell of the base oil, does not represent the quality of the base oil is good or bad.

Gear oil is good or bad to see whether its performance has the following points:

1, appropriate viscosity and good viscosity temperature. Viscosity is the most basic performance of gear oil. Because if you want to form a thick film, load resistance, you need a viscosity gear oil.

2、Good anti-wear performance. Extreme pressure anti-wear properties can prevent wear and abrasion of the tooth surface in motion, as well as the performance of gluing.

3、Excellent anti-emulsification ability. After the gear oil meets water, it will emulsify and deteriorate, which will affect the formation of lubricant film and cause abrasion and wear.