AMSOIL XL 5W-20 Synthetic Motor OilAMSOIL has reformulated their XL Synthetic Motor Oil Series in anticipation of the upcoming ILSAC GF-6 industry specification. The result is long service life, better cleaning power and improved resistance to extreme heat. XL Motor Oil is available in 0W-20, 5W-20, 5W-30, 10W-30 and 10W-40.

Here are the top five highlights of the new rendition of AMSOIL XL Synthetic Motor Oil.

1. Longer Service Life

The service life of the XL Synthetic Motor Oil line was previously 10,000 miles (16,000 km) or 6 months (whichever came first). The new formula boosts the service life to 12,000 miles (19,000 km) or one year (whichever comes first).

2. Improved Turbo and GDI Service

Auto manufacturers are constantly striving to improve fuel economy. In some models they opt for smaller engines. In order to keep performance at acceptable levels (and further improve efficiency), turbochargers and gasoline direct injection (GDI) have been employed. These two technologies bring special challenges to motor oil.

GDI engines can be prone to motor oil-related engine deposits. These deposits can lead pre-ignition and even engine damage. XL Motor Oils are completely immune to deposits in gasoline direct injection engines. Turbochargers can bake oil into hard deposits. XL Series is highly resistant to turbocharger heat and provides dependable turbo protection.

3. Holds Its Viscosity Under Extreme Heat

One of the most impressive attributes of the new version of AMSOIL XL Synthetics Oil is its ability with resist thickening after exposure to hot operating conditions. XL’s strong resistance to both thickening and shearing down is one of the main reasons that AMSOIL was able to safely stretch its service interval out to 12,000 miles or one year.

4. Powerful Deposit Resistance And Acid Fighting Strength

Another reason that AMSOIL was able to increase the oil change interval for XL Series is its upgraded ability to resist the formation of engine deposits.  AMSOIL XL keeps engines clean with powerful detergents. Clean engines run more efficiently and perform at their best.

AMSOIL was also able to boost the total base number (TBN) of XL Series to 10.0. This gives XL a greater capacity to fight acids over long service intervals. This is another layer of engine protection and further reason to have confidence in this product.

5. Price Remains Unchanged

Despite all of these upgrades, AMSOIL is not raising the price of XL Series. The new XL Series did not require more expensive ingredients, it was more a triumph of engineering. XL Series users can reap the benefits of AMSOIL’s 45 years of experience designing the world’s finest synthetic motor oils.


We are quite excited about the new 12,000 mile/ one year drain interval of XL Series. This longer interval is likely conservative considering how AMSOIL products perform in the real world. AMSOIL has a tendency to under-sell and over-deliver.

Would you like to see pricing on the new and improved AMSOIL XL Synthetic Motor Oil Series? Contact us using the form on this page or call us at 1-800-748-5781.