Facts & Info

All Synthetic Motor Oils Are Not Created Equal

All Synthetic Motor Oils Are Not Created Equal

Not all synthetic motor oils use the same base oils, additive systems or performance targets. Learn what to look for beyond the label when choosing oil for your vehicle ...
Simplified engine cutaway illustration showing combustion heat above the pistons, coolant around the cylinder head and oil in the crankcase and oil pan.

Hot Weather Performance: Why Heat Tests Motor Oil

Heat, towing, heavy loads and hot-running engines can stress motor oil long before the temperature gauge signals a problem. Learn how heat affects oil—and why oxidation, volatility and deposit control matter ...
Cold Weather Performance: Why Oil Flow Matters in Severe Winter

Cold Weather Performance: Why Oil Flow Matters in Severe Winter

Severe cold makes engine oil harder to crank and pump. Learn how viscosity grades, cold-flow performance and properly synthetic oil affect protection at winter startup ...
What Is the NOACK Volatility Test?

What Is the NOACK Volatility Test?

The NOACK volatility test measures how much motor oil evaporates under high heat. Learn what ASTM D5800 results mean and why lower volatility can help support oil control and engine protection ...
The True Measure of Lubricant Quality

The True Measure of Lubricant Quality

This 2003 article by Ed Newman explains how lubricant quality is measured, covering viscosity, cold-start protection, wear control, volatility, fuel economy and the differences between synthetic and conventional motor oils ...
So What's In This Stuff Anyways? All You Really Need to Know About Motor Oil Additives

So What’s In This Stuff Anyways? All You Really Need to Know About Motor Oil Additives

Originally published in National Oil & Lube News in October 2001, “So What’s In This Stuff Anyways?” explains the additive package in motor oil, including detergents, dispersants, antiwear agents, antioxidants, viscosity modifiers and other components that help protect engines ...
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Upcoming Shows
34th Daytona Beach Biketoberfest Motorcycle Parts Swap Meet
34th Daytona Beach Biketoberfest Motorcycle Parts Swap Meet
October 15-18, 2026 | Tomoka Farms | Daytona Beach, Florida ...
Blog & News
AMSOIL Formula 4-Stroke Powersports 0W-40 Gets a New Look
AMSOIL Formula 4-Stroke Powersports 0W-40 Gets a New Look
AMSOIL is introducing a new label for Formula 4-Stroke Powersports 0W-40 Synthetic Motor Oil. The packaging is changing, but the ...
Event Coverage Spotlight
One of the many creations that can be seen exploring the vendors at the 38th Annual Antique Engine & Tractor “Swap Meet”
38th Annual Antique Engine & Tractor “Swap Meet”
January 14-17, 2026 | Florida Flywheelers Antique Engine Club | Forte Meade, Florida ...
Facts & Info Spotlight
So What's In This Stuff Anyways? All You Really Need to Know About Motor Oil Additives
So What’s In This Stuff Anyways? All You Really Need to Know About Motor Oil Additives
Originally published in National Oil & Lube News in October 2001, “So What’s In This Stuff Anyways?” explains the additive ...
Heritage Spotlight
My First Cars and AMSOIL
My First Cars and AMSOIL
1981 Mercury Capri 

My first car was a 1981 Mercury Capri RS, and we put AMSOIL 10W-30 in it right away ...