Auto-Rx Customers Questions & Answers

Application for Engines
with Less than 100,000 Miles

Diesel Engines   |    Motorcycle Engines

Auto-Rx^® Plus is designed to clean the internal oil system while you drive. It is formulated to give you maximum engine protection while slowly dissolving sludge and other contaminants in the oiling system. It is designed to be run for the length of a fresh oil change interval.

For conventional oils with Auto-Rx^® Plus added, run up to 3,000 miles. For full synthetic motor oils, you can run up to 4,500 miles.

For motors with over 100,000 miles it may be necessary to run a second application. For a heavily sludged motor, we suggest you run the sludge application.

Your engine’s PCV system should be serviced on a regular basis. A properly working PCV system is essential for best results with Auto-Rx^® Plus.

Note: Vehicles with more than 100,000 miles will likely require a second application. Repeat Steps 1-3.

What about a New-Rebuilt Engine?

I have just rebuilt a Toyota Land Cruiser engine: 1993 FEZ80, a straight 4.5 liter inline 6. It had 222K when the head gasket went. So, complete top end rebuild, cylinder oversize rebore with new pistons and rings, complete new bearings (all), a complete rebuild! Only three major components not replaced were crank, rods, and cams. So, I essentially have a new/low-mileage engine.

What plan should I put this engine on when using Auto-Rx? Should I even bother?

Thanks for your help.

Answer

Wait for about 7,000 miles to be achieved on the clock. At that point then assess how well the new motor parts have broken in and how well the new rings have seated with the bores. If you are not completely happy with the break-in, especially with compression values, start an Auto-Rx Plus basic application right away. This has given many vehicles a second chance at being an optimal motor. Be sure to run conventional oil during the break-in period.