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Ordering Information for Auto-Rx Internal Engine Cleaner
Back to Auto-Rx Internal Engine Cleaner

In 12 years of production, Auto-RX® Plus is our 4th blend. It is provides the best performance since production began. Both Auto-Rx® and Auto-Rx® Plus fall under the provisions, and claims of our original patent, U.S. Patent #6,544,349.

Auto-Rx® Plus can be safely mixed with Auto-Rx®. Although Auto-Rx® has been upgraded to Auto-Rx® Plus, Auto-Rx® may be mixed with the new and improved Auto-Rx® Plus. See instructions for Auto-Rx Plus.

Auto-Rx® Plus safely removes sludge, dirt, carbon build-up, and other contaminants from engines, transmissions, piston rings, motorcycles, power steering, differentials, and turbo engines. Auto-Rx® Plus safely removes sludge while you drive. Auto-Rx® Plus safely rejuvenates seals, reducing or eliminating oil leaks. See (US Patent #6,544,349) and View Product Label


One product ... Auto-Rx® Plus ... will safely clean either engines or transmissions. For automatic transmissions: Add 1/2 bottle to the existing fluid. Drive 1,000 miles and then have the fluid replaced. It is just that simple. For engines: Add one bottle of Auto-Rx® Plus to a fresh oil change, and drive. For heavily sludged, high mileage motors, you can get faster results in a shorter timeframe with the Fast Track application. The Fast Track application uses two bottles of Auto-Rx® Plus instead of only one bottle. In either case the cleaning time is 3,000 miles and the product works best with simple conventional oil. After 3,000 miles, drain the oil, change the filter, and refill with fresh oil. Drive another 3,000 miles and change the oil and filter. (This is referred to as the rinse phase)

This product is really simple to use. All of the applications are as simple as ADD AND DRIVE, and all of the cleaning activity occurs while you drive, whether you are cleaning an engine, transmission, differential, motorcycle, or power steering unit. Contact us about cleaning inboard marine engines.

The application instructions let you know how much to use and how long to run it. To find out how much to order, see Ordering Information and follow the links to read the instructions for your application.

We have a Question & Answer board for you more technically minded readers. We have before and after pictures and other highly detailed information on Auto-Rx® Plus here on our site including this article on sludge: What is sludge? Why do I have it in my engine?.


To research Auto-Rx® Plus , use the FAQ and Technical pages. If you cannot find the answer to your question about Auto-Rx® Plus , you may email our technical staff at technicalarx@gmail.com


Auto-Rx® Plus :

  • Is a specially formulated, all-natural metal cleaner designed to
    thoroughly clean the internals of your engine.
  • Restores the vehicle to maximum efficiency.
  • Reduces oil consumption.
  • Reduces emissions because the piston ring is cleaned and the valves seal better.
  • Rejuvenates seals, resulting in reduced or eliminated oil leaks.
  • Eliminates the need for oil additives and solvent flushes.
  • Enables the motor oil to lubricate parts more effectively.
  • Saves turbo bearings by liquefying high-temperature carbon deposits.
  • Provides residual lubricity because the cleaned components
    allow polar bonding of motor oil to components.
  • Uses oil as a carrier and liquefies all contaminants to prevent
    particulates from blocking the oil screen, oil pump, or piston port.
  • Is safe for turbo engines.


Company Credibility

Auto-Rx® Plus is a non-toxic product and was invented to clean oil-lubricated internal metal safely and efficiently. After years of research and testing formulations, the right formulation was discovered. Later, US Patent #6,544,349 was issued for Auto-Rx®, and the product began to be marketed 12 years ago only in the United States. Today, the product has been upgraded to Auto-Rx® Plus, and is sold to consumers in countries around the world but is available only on the Internet, not in retail stores.


Auto-Rx® Inc., is based in Jacksonville Beach, Florida, and Frank Miller is its founder, CEO, and president.




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