A Beginner’s Guide to Motor Oil: What You Need to Know

Pulling oil dipstick

Motor oil seems simple. You pour it in your engine and drive away. But motor oil is far more complex…and important. Here’s what you need to know.



How Start-Stop Engines Challenge Motor Oil

Car at stop sign

Start-stop cycles in equipped engines can triple compared to traditional engines, increasing the likelihood of bearing wear.



What’s the Best Oil for Turbo Cars?

Turbocharged engine

Industry testing shows that AMSOIL delivers excellent protection for turbo cars, limiting deposits on the turbo bearing and shaft. See the results.



What Does Motor Oil Do?

What does motor oil do?

The primary functions of motor oil are to reduce wear and friction. But motor oil must do more than that for your engine to run well and last as designed.



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.



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.



The DIY Oil Change: Avoid These 5 Common Mistakes

Many motorists still love the DIY oil change. If you change your own oil, avoid these five common mistakes to ensure your vehicle performs well.



Can I Use Diesel Oil in My Gas Engine?

You can use diesel oil in a gas engine provided the diesel oil meets the appropriate specifications and viscosity requirements of your engine.



The Pros and Cons of Semi-Synthetic Oils and Synthetic Blends

How to check oil properly

Generally speaking, synthetic blends and semi-synthetic refer to the same thing: an oil that uses a combination of conventional and synthetic base oils in its formulation.



Why Does Motor Oil Turn Black?

Oil change

Find out why motor oil turns black and how that may affect your engine and, more importantly, if it signals the time for an oil change.