AMSOIL vs. Harley-Davidson Oil: How We Perform

AMSOIL vs. Harley Oil

We submitted AMSOIL synthetic motorcycle oil and Harley-Davidson SYN3 oil to independent testing. Who came out on top? Find out here.



Murray Pfaff: Turning Concepts into Reality

Murray Pfaff

Murray Pfaff has built some of the baddest cars imaginable, including “FireMaker,” which makes a ton of power and a pair of flames from its flamethrowers.



How to Check Power Steering Fluid (and When to Change it)

Check power steering fluid

There are a couple ways to change power steering fluid, depending on your technical know-how. Here’s how.



What’s the Best Synthetic Motor Oil?

Signature Series oil change

Want the best synthetic oil for your engine? Many oil companies say they have the best, but we offer the scientific data to back it up.



Do Coolant Additives Work?

Coolant additives

AMSOIL DOMINATOR Coolant Boost uses tiered-surfactant technology to reduce engine temperatures up to 25ºF (14ºC) while increasing warm-up times up to 54%.



Transmission Flush vs Fluid Change: Which is Better?

Transmission flush

Is a flush or pan drop better when changing transmission fluid? Learn the pros and cons of each method.



The History of Synthetic Oil (and AMSOIL)

Conventional motor oil helped doom German soldiers in the Battle of Stalingrad during World War II, intensifying efforts to find a better motor oil. Here’s the story of how synthetic oil came to be.



2019 AMSOIL Year in Review: Product & Company News

2019 was another eventful year at AMSOIL. We introduced several new products and continued to pace the industry. Check out all the highlights here.



Racing Oil vs. Regular Oil: What’s the Difference?

Some enthusiasts use racing oil in their car or truck. But your vehicle needs an oil that provides benefits racing oils aren’t designed to deliver.