Notes On Choosing An Engine Oil For Use With Auto-Rx®

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 Oil,s which include Pennzoil Platinum, Castrol GTX, and Valvoline Synpower 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, turbocharger or 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’s manufacturer recommends.

Auto-Rx® Application Amounts To Use.