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Gear oil is a lubricant made specifically for transmissions, transfer cases, and differentials in automobiles, trucks, and other machinery. It has high viscosity and usually contains organosulfur compounds .
NAPA retail store in a suburb of Portland, Oregon NAPA Detroit Distribution Center, Romulus, Michigan. The National Automotive Parts Association (NAPA), also known as NAPA Auto Parts, founded in 1925, is an American retailers' cooperative distributing automotive replacement parts, accessories and service items throughout North America.
This gear oil is identified in GM documentation as a synthetic 75W-85 GL-4. No maintenance is required for normal operation. Although the MTF of the F40 transaxle is a fill for life, the actual capacity may be useful for those who have emptied theirs, e.g. when changing the clutch. In the user manual of cars fitted with the F40 it is given as 2 ...
The oil fails the test at a particular temperature if the oil is too viscous. The grade of the oil is that associated with the coldest temperature at which the oil passes the test. For example, if an oil passes at the specified temperatures for 10W and 5W, but fails at the 0W temperature, the oil is grade 5W. It cannot be labeled 0W or 10W.
Castrol products are still marketed under the red, white and green colour scheme that dates from the launch of Castrol motor oil in 1909. Advertisements for Castrol oil historically featured the slogan "Castrol – liquid engineering". This was more recently refreshed and reintroduced as "It's more than just oil. It's liquid engineering." [27] [28]
Synthetic oils are also used in metal stamping to provide environmental and other benefits when compared to conventional petroleum and animal-fat based products. [4] These products are also referred to as "non-oil" or "oil free". A polyalcanoate synthetic oil is widely used to lubricate pendulum clocks.
Examples include enclosed gear drives operating at low speeds and open gearing. Grades 0, 1 and 2 are used in highly loaded gearing. Grades 1 through 4 are often used in rolling contact bearings. Greases with a higher number are firmer, tend to stay in place and are a good choice when leakage is a concern.
Methylenebis(dibutyldithiocarbamate) is an additive in some extreme pressure gear oils, serving as an antioxidant and protecting metal surfaces. [1] The early extreme pressure additives were based on lead salts of fatty acids ("lead soaps"), "active sulfur" compounds (e.g. thiols and elementary sulfur), and chlorinated compounds.
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