Each set of Auto-Rx^® application instructions has been custom tailored to give you the greatest chance for success. Each with its own methodology, the applications are based on years of extensive testing and development and are fine tuned for the specific results desired.

It is important to note that Auto-Rx^® contains chemistry uniquely formulated to provide results where other products may have failed. Currently, we are aware of no other product that can provide the results of Auto-Rx^®.

Auto-Rx^® is a proven metal cleaner. Auto-Rx^® does not change your engine oil chemistry or viscosity. It will not cause foaming, nor does it interfere with injectors or sensors. Auto-Rx^® utilizes engine oil to move through and clean engine areas that are normally reached by lubrication. Auto-Rx^® is safe to use and will not cause engine damage. Auto-Rx^® dissolves carbon deposits and sludge so they can be removed by the oil filter or otherwise drained away with the next oil change.

Auto-Rx^® works with generally the least expensive motor oil available. Conventional engine oils include Valvoline Conventional, SuperTech (available at Wal-Mart), and Coastal (available at AutoZone).

Group III Oils, which include Pennzoil (in the yellow plastic bottle), Pennzoil Platinum, and Castrol GTX, work well also.

Use of high-mileage engine oils should be avoided during the Auto-Rx^® application. However, high-mileage engine oils can be used while following an Auto-Rx^® maintenance plan.

If your engine has a supercharger or turbocharger, or if the manufacturer recommends that you only use synthetic motor oil, please choose a Group III motor oil to avoid competing chemistry.

Always choose the engine oil weight (viscosity) that your engine manufacturer recommends.

Auto-Rx^® will clean rotating seals, removing the sludge and varnish that prevent rotating seals from working properly. Auto-Rx^® cannot repair damaged rotating seals, such as those which have been torn or ripped. During the Clean Phase, rotating seal leaks may worsen. However, sealing ability should be restored during the Rinse Phase. In some cases, full recovery of rotating seals may not be achieved until several miles following completion of the last Rinse Phase.

It is strongly recommended that you begin an Auto-Rx^® maintenance plan following your particular Auto-Rx^® application. This will ensure a clean motor and continued performance. Simply add three fluid ounces of Auto-Rx^® with each oil change, and you will never have to clean your engine again. For engines with sludge, add four ounces to every oil change.