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Knowledge that protects engines

Practical, independent explanations of oil specifications, viscosity, lubrication, engine protection, and automotive fluids.

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Automotive lubricant testing in a modern laboratory

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Three precision automotive gear sets receive streams of golden gear oil.
Things to Know About Viscosity

New Gear Oil Viscosity Grades: SAE 65, 70 and 75

In February 2019, the SAE J306 standard – that sets the limits for gear oil viscosity grades – has been updated. Three new viscosity grades – SAE 65, 70 and 75 – were introduced and...

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Things to Know About Viscosity Low-viscosity oils move through precision laboratory flow channels.

Introducing the SAE 8 and SAE 12 Viscosity Grades

On January 20, 2015 the Society of Automotive Engineers, better known by its acronym as SAE added two new viscosity grades to its most popular viscosity classification system defined under the SAE J 300 standard....

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Things to Know About Viscosity Golden motor oil demonstrates different flow behavior at cold and warm temperatures.

What is Oil Viscosity a.k.a. Oil Weight?

Viscosity is a fluid’s resistance to flow. In case of lubricants the viscosity is very important because it affects the oil’s ability to reduce friction and transfer heat. The viscosity is measured in mPa*s (millipascal-seconds)...

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Things to Know About Viscosity Low-viscosity golden oil flows through transparent channels around precision bearings.

The SAE 16 Viscosity Grade

On April 1, 2013 the Society of Automotive Engineers (SAE) introduced a new viscosity grade called SAE 16. This is a new high temperature viscosity grade hence it's not 16W just simply 16 or SAE...

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