The Science of Multigrade Oils
Prior to the introduction of multigrade oils, the method to maintain proper viscosity year-round was seasonal oil changes.
The Four Types of Wear
Quality lubricants are key to guarding against wear and keeping vehicles running for the long haul.
Carry That Weight
When extreme loads break the lubricant film, metal-to-metal contact occurs, increasing friction and heat.
New Products Meet the Moment
AMSOIL introduces Signature Series 0W-16 100% Synthetic Motor Oil and OE 0W-40 100% Synthetic Motor Oil.
Understanding Oil Viscosity
Viscosity is the measure of a fluid's resistance to flow.
Why Do Motorists Change Oil in the Spring and Fall?
Spring and fall constitute “oil-change season” for many, but that schedule is more tradition than a maintenance imperative.
Should I Use a Lighter Winter Oil Weight?
Using a lighter winter oil weight when the temperature drops can improve cold starts and maximize wear protection at startup.
How to Read a Gear Oil Viscosity Chart
This comparative viscosity chart can help determine if two or more lubricants have similar viscosities.
5W-20 vs 5W-30 vs 10W-30: What’s the Difference?
The primary differences are their viscosities when cold and once your engine has reached operating temperature.
What Happens if I Use A Thicker Oil in My Engine?
It's best to use the recommended viscosity, but a slightly thinner or thicker oil likely won't cause harm.
