The "W" DOESN'T Stand For WEIGHT! A Certified Lubrication Specialist Explains SAE Viscosity Grades.

20W-50, 5W-30, 0W-20... These viscosity grades are all available at the local auto parts store, but a 0W-20 is not a Zero Weight oil. The "W" in 0W-20 actually stands for Winter.

Because viscosity is the most important characteristic of any lubricant, understanding SAE grades is critical to optimizing engine performance and durability.

World renowned Tribologist and Certified Lubrication Specialist, Lake Speed Jr explains the SAE J300 viscosity grade classification system in this video.

To get started with oil analysis, visit https://www.speediagnostix.com

Many motor oils are available at https://amzn.to/3RpHOAR

Who is the ​⁠ @themotoroilgeek ? I'm a Society of Tribologists and Lubrication Engineers Certified Lubrication Specialist and Oil Monitoring Analyst (I've maintained both of those for over a decade). I also worked for Joe Gibbs Racing for 12 years as their lubricant specialist. During that time, we worked with Wix Filters (one of our sponsors) to test and develop filters for our race engines. We also worked with Lubrizol and Chevron-Phillips Chemical to test and develop oils for our race cars. Following that, I was the head of R&D for Driven Racing Oil. During that time, I formulated and tested over 50 products. We also worked with Cummins, Comp Cams, Oak Ridge National Labs and General Motors on various R&D products. Those efforts are recorded in peer reviewed white papers published by SAE International and ACS Sustainable Chemistry journals.

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