FAQ (Frequently Asked Questions)
I just bought a new car, and I'd like to try AMSOIL motor oil. Could using AMSOIL void my new car warranty?
Absolutely not. Vehicle manufacturers recommend using motor oils meeting certain viscosity grades and American Petroleum Insitute service requirements. Whether the motor oil is petroleum based or synthetic will not affect warranty coverage. The manufacturer is required to cover all equipment failures it would normally cover as long as the oil meets the requirements and was not the cause of the failure. AMSOIL exceeds these requirements and has never been deemed the cause of an engine's failure. Even so, AMSOIL has its own limited warranty, protecting you even further. In addition, the federally mandated Magnuson-Moss Act states that a manufacturer may not require the use of a specific brand of aftermarket product unless it's provided free of charge.
What's the difference between conventional petroleum motor oils and synthetic motor oils?
Conventional petroleum oils are refined from crude oil which is pumped from within the earth. The refining process, however, does not remove many of the impurities inherent in the crude oil. These impurities detract from the lubricating ability of the oil and contribute to deposit, sludge and varnish formation. AMSOIL synthetic motor oils are constructed in the laboratory and contain no impurities. AMSOIL synthetic motor oils have uniform molecular structures and are designed for specific lubricating applications. They are not affected by the high temperatures or demanding operating conditions of modern engines.
I was always told to change my oil every 3,000 miles if I wanted to properly maintain my vehicle. How is it possible to drive 25,000 to 35,000 miles without an oil change using Amsoil?
AMSOIL synthetic motor oils are guaranteed to run 25,000 to 35,000 miles or one year in mechanically sound engines, providing, of course, the oil is kept free of contaminants by changing the oil filter according to the manufacturer's recommendation or, when using an AMSOIL Absolute Efficiency oil filter, changing the filter at one year or 25,000 miles, whichever comes first. AMSOIL coined the phrase "exended drain interval" and it's been validated by 35 years of industry testing and by tens of thousands of motorists and millions of over-the-road miles.
AMSOIL synthetic motor oils provide extended drain performance because they don't break down in heat like conventional petroleum oils do. AMSOIL motor oils don't form performance-robbing deposits, and don't volatize (burn of), which alters viscosity and increases oil consumption. Finally, AMSOIL's superior additive package, a key element in the oil's ability to function, holds up under engine stresses, remaining serviceable for the full 25,000 to 35,000 miles.
AMSOIL costs more than my regular oil does. How can I justify paying this higher cost?
AMSOIL synthetic motor oils are more expensive off the shelf than most petroleum oils, but comparing AMSOIL and other motor oils is like comparing apples and oranges. AMSOIL's performance so far exceeds that of conventional motor oils, it's really a different class of product. AMSOIL is a premium product that rightfully commands a premium price.
Like anything of real value, however, the true consumer cost doesn't end with the purchase price. AMSOIL motor oils are extremely cost effective compared to conventional 3,000-mile drain interval oils in savings realized in fuel economy, reduced repairs, fewer oil changes, reduced downtime, reduced maintenance and extended engine life.
I bought a new car a year ago, and I've been running petroleum motor oil in it ever since. Could switching to AMSOIL now cause mechanical problems?
Switching from petroleum oil to AMSOIL is perfectly safe.
Can I mix AMSOIL with my petroleum oil?
Yes, you can. There is no danger in mixing Amsoil with another brand. However, a conventional petroleum oil will detract from the superior performance of AMSOIL. So why would you want to?
Should oil additives or aftermarket products be added to AMSOIL motor oils?
No, you don't need them. AMSOIL motor oils are formulated under the strictest quality control standards to provide superior lubrication performance. Additives cost money and only detract from the quality of AMSOIL motor oils.
What benefits can people expect using AMSOIL motor oils?
AMSOIL synthetic motor oils have demonstrated improved performance and fuel economy, reduced oil consumption, lower repair costs, easier cold-temperature starts, increased engine life and reduced emissions.
Is AMSOIL as good as Mobil 1?
No, AMSOIL is better than Mobil 1, and here are the test results that prove it.