AMSOIL has been on the leading edge of engine performance lubrication since they day they opened for business. With the launch of their first synthetic 10W-40 motor oil in 1972, their years of research inspired by aerospace technology lead to a breakthrough as the first fully synthetic motor oil in the world to meet the American Petroleum Institutes service requirements. They've been investing heavily in research and development to bring you the best performing automotive lubrication in the industry ever since.

AMSOIL offers a wide range of automotive performance products from full synthetic oils and lubricants, to their EA air filtration line which has consistently outperformed re-usable performance filters such as K&N. Their products are backed by industry-leading research and development from the lab to the racetrack.

Apex Customs carries the full line of AMSOIL products. Products are available for pickup at our Phoenix AZ shop or you can place an order online by clicking the Show Now button. If we don't have it in stock, we can get whatever you are looking within a few days. We also offer AMSOIL products with any of our services. If you would like to include an oil change with your vinyl wrap or performance engine build, our skilled technicians are ready to accommodate your request!



Signature Series Synthetic Motor Oil

AMSOIL Signature Series motor oil was engineered specifically for automotive enthusiasts wanting maximum performance and protection for their vehicle. It is precision formulated utilizing the latest in lubrication technology to blow the doors off even the highest industry standards.

The fully synthetic signature series motor oil is designed to provide a strong fluid film around your motors critical metal surfaces. Formulated with robust anti-wear additives, the signature series line will reduce wear in metal-to-metal contact for maximum engine performance and life.


DOMINATOR Synthetic Racing Oil

For those automotive enthusiasts who are looking for the best protection around the track, AMSOIL'S DOMINATOR series racing oil is just the ticket. DOMINATOR high-performance racing oil will provide your motor superior performance and maximum protection while you push it to the limits around the track.

DOMINATOR is uniquely engineered to withstand high temperatures, elevated rpm, and shock-loading which are common to racing applications. Tested and validated by AMSOIL'S championship race teams, it's robust formula will provide maximum horsepower without sacrificing engine protection.


AMSOIL Ea Universal Air Induction Filters

High flowing air filters are one of the first steps to increased engine performance, horsepower, and torque. AMSOIL'S cleanable and reusable air filters offer superior performance and unmatched engine protection at a fraction of the price to competing air filter products such as K&N. Designed to replace stock and aftermarket oil-wetted gauze and foam conical filters on Cold Air Intake systems, they deliver maximum horsepower with superior airflow paired with improved filtering efficiency.

By boosting airflow into a motor, the top portion of EaAU filters are cutaway. The filtration media is inserted into a conical form which is oriented in the direction of incoming airflow. This design results in an increased filtration surface area which improves airflow for optimum power.

In lab testing, EaAU nanofiber media removed fifty times more dust than the average wet-gauze media found in K&N filters and five times more dust than the average cellulose filter. Protecting your vehicles motor is crucial to optimum performance and durability. With an AMSOIL EaAU filter, rest assured your vehicle is protected against wear-causing contaminants.


DOMINATOR Octane Boost

AMSOIL DOMINATOR Octane Boost is specially formulated to improve engine performance while maximizing power. Octane boost will improve engine throttle response, reduce engine knock, improve fuel burn, improve ignition, and inhibit corrosion in your motors block. Recommended for racing and off-road use, AMSOIL'S Octane Boost will give your vehicle the edge it needs to perform in even the most demanding applications.

AMSOIL Dominator Octane Boost is available for purchase at our Phoenix Arizona shop. One treatment will improve ignition and reduce engine knock, however, you'll get the best return if you use a bottle with every fuel top off. Most of our customers find that one 12-ounce bottle per 15 gallons will provide the best engine performance results.


P.i. Performance Improver Gasoline Additive

Over time your vehicle's engine will build up carbon deposits reducing it's efficiency and performance capabilities. AMSOIL'S P.i. Performance Improver was developed to improve your engines efficiency by reducing emissions such carbon monoxide (CO) up to 26%, hydrocarbons (HC) up to 15% and nitrous oxides (NOx) up to 17% resulting in improved fuel mileage on average 2.3% and up to 5.7%. By restoring efficiency, performance, and power, P.i. will reduce the need for costly higher octane fuels.

While all modern gasoline contain additives, most lack sufficient treatment of either high-quality additives or enough additives. These lower grade fuels result in:

  • Lost fuel economy
  • Lost power
  • Poor throttle response
  • Failed emissions tests
  • Poor drivability - rough idle, stalling, surging, hesitation
  • Engine knocking (pinging) and rap
  • Difficult starts

AMSOIL P.i. is the most potent gasoline additive available on the market today. It's unmatched capabilities in cleaning combustion chamber deposits and intake valve deposits, this super concentrated detergent will also clean fuel injector deposits.


Offering the full line of AMSOIL products to the greater Phoenix Arizona area including Tempe, Mesa, Scottsdale, and Glendale.