A. Basic Application. First change your motor oil and filter. Add one full 12 oz bottle of Auto-Rx® to your engine.
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.
At 2,500 miles change your oil and filter again, but do not add Auto-Rx® or any other additive. Drive an additional 3,000 miles, then change your oil and filter again.
You may follow up your first application with a second if you feel additional cleaning is needed. Vehicles with over 100,000 miles require a second application.
We recommend that you follow up your treatment by going on the Auto-Rx® Maintenance Plan. This will ensure a clean motor and maintain peak performance.