Welcome To Auto-Rx® for Transmissions!
Auto-Rx® Transmission Cleaner
Application Methods

To get the most out of Auto-Rx®, we recommend the
following methods of use:

Method #1
Method #2
Step 1 Step 2 Step 3 For Do-It-Yourself Mechanics Only (technical expertise required)

If you are willing to do it yourself here's our recommendation. Install 6 oz's of Auto-RX and run 1000-1500 miles to clean the transmission.

THEN drop pan, change filter, reinstall. Measuring the old fluid in pan into a milk bottle type container, install that amount of new ATF back into transmission. Disconnect BOTH ATF cooler lines at radiator and place a container or pan under each line end (helps to have an assistant). Start engine, shut down after 1 or 2 quarts have come out one of the lines. Refill exact amount of fresh fluid in transmission (this keeps air out of the system).

Start engine again and repeat until clean fluid is coming out of cooler line. This is messy and time consuming but will purge all old ATF from transmission and torque converter. Reinstall cooler lines and start car, cycle through gears, place in park and check level per owners manual. Check for leaks. Top up as necessary after driving and heated up. Don't overfill.

You just safely flushed the whole system, no T-TEC $ cost and Auto-RX has removed the dirt and  contamination from your transmission.
Add 6 oz. of Auto-Rx®, to your existing transmission fluid. Drive your vehicle for 1,000 miles. If you have used additives drive an additional 500 miles. Drain your transmission using a T-Tec* (or similar) procedure. This is the most efficient transmission service method available, as more contaminated fluid can be removed from your transmission than with traditional methods (i.e. manual drainage)
IMPORTANT NOTE: If you have used additives prior to Auto-Rx®, you will have to add 3 oz. of Auto-Rx® to your new transmission fluid, repeat the T-Tec procedure a second time and drive 1,000 to 1,500 miles to achieve complete cleaning.

* T-TEC (TransTech II®) connects through transmission cooler lines and provides a clean "environmentally friendly" and systematic approach to servicing automatic transmissions.

The unit will flush virtually all of the old transmission fluid and replace it with the new fluid while the engine is idling.
Manual drainage of transmission fluid, or inability to remove contamination from the torque converter will not clean the transmission unit completely, and will result in little transmission improvements when Auto-Rx® Transmission Cleaner is used.