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The viscometrics for gear oils are standardized in SAE J306. Multigrade gear oils are becoming more common; while gear oil does not reach the temperatures of motor oil, it does warm up appreciably as the car is driven, due mostly to shear friction (with a small amount of heat conduction through the bellhousing from the engine block).
NAPA Auto Parts was established in 1925. [28] Some NAPA Auto Parts stores are owned and operated by GPC, but most are independently owned and operated. [29] There were approximately 6,000 NAPA Auto Parts stores in 2020. [28] GPC acquired UAP Inc. of Canada in 1998 and the Australian car parts supplier Exego Group in 2013.
Gear oil; H. Hydraulic fluid; S. SAE J306 This page was last edited on 18 July 2008, at 17:30 (UTC). Text is available under the Creative ...
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.
Shell Rotella is a line of heavy-duty engine lubrication products produced by Shell plc. The line includes engine oils, gear oils and coolants. The oil carries both the American Petroleum Institute (API) diesel "C" rating as well as the API gasoline engine "S" rating. Ratings differ based on the oil.
The SAE has a separate viscosity rating system for gear, axle, and manual transmission oils, SAE J306, which should not be confused with engine oil viscosity. The higher numbers of a gear oil (e.g., 75W-140) does not mean that it has higher viscosity than an engine oil 20W-50.
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.
O’Reilly Automotive, Inc., doing business as O’Reilly Auto Parts, is an American auto parts retailer that provides automotive aftermarket parts, tools, supplies, equipment, and accessories to professional service providers and do-it-yourself customers.