Auto-Rx® Heavy Sludge
Application Instructions
(updated: 2-15-2008)

Print a copy of the instructions

Follow the applications on this site. Auto-Rx applications have changed over the past several years. This is due to our continued effort to maximize the value to you the customer. So please follow the current applications on this site. They are tried and true with 10’s of thousands of successful applications.

Occasionally you will find rogue applications performed by an individual that is not endorsed by Auto-Rx Worldwide, Inc. Many of these applications have been highly successful and noted, but are not endorsed by Auto-Rx Worldwide, Inc. for use by the general public.
If the Applications provided are not followed, Auto-Rx Worldwide, Inc cannot be held responsible.

Oil-Seals-Maintenance Plan

B.  Sludge Application

First change your motor oil and filter. Add 2 ounces of Auto-Rx® for each quart of oil your engine holds.

Auto-Rx works best with conventional (non-synthetic) motor oil. If you feel you must use a synthetic motor oil we recommend using a Group III oil to avoid competing chemistries. 

Drive 2,500 miles, changing your oil filter after approximately 1,250 miles. Change your oil and filter again, do not add Auto-Rx or any other additive. Drive an additional 3,000 miles, changing your oil filter after approximately 1,500 miles. 

Engines following the sludge application require a second treatment. Repeat the instructions outlined above.

We strongly recommend you continue to use non-synthetic oil and that you follow up your treatment by going on the Auto-Rx Maintenance Plan. This will ensure a CLEAN MOTOR and PREVENT FUTURE SLUDGE BUILD UP.

Why the Maintenance Dose?

You have just finished with a cleaning and rinse applications, to clean up the motors internals with respect to harmful deposits, but you are really stopping at third base.

Early on with Auto-Rx we had suggested running a clean and rinse cycle every 25,000 miles to keep a motor deposit free. Over the last 3 years we have realized that it is more effective to run a smaller dose of Auto-Rx with each oil change.

In addition to keeping your motor’s vital internals clean, Auto-Rx has shown to reduce wear, as well as providing for a lower coefficient of friction than that of motor oil alone. With just three fluid ounces in the sump, enhanced lubrication is provided as well fuel efficiency. So why wait utilizing the Auto-Rx benefits every 25,000 miles, when you can have it working every time you turn the key.

The maintenance dose has shown excellent results through used oil analysis, with both conventional oil runs and full synthetic oil, with extended drains. Take advantage of the volume discount price offerings and order that extra bottle with your order.

Oil-Seals-Maintenance Plan


Auto-Rx Worldwide, Inc. "A Clean Engine Is Both Healthy And Efficient "

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