I purchased a couple of bottles of Auto-RX over the winter and I was extremely pleased with the results.

I used it on a '99 Crown Victoria Police Interceptor.  This was a retired cruiser with 100K miles on the odometer (and lots of idle time).  Auto-RX did a noticable job of cleaning up.

I also used it on my '95 Lincoln Towncar with 86K miles.  This car used about 1 quart of oil per 3K miles.  I figured the oil seals needed replacement (this is a common problem on the pre '96 Ford 4.6L engines.  After one Auto-RX treatment, the oil consumption went down to less than 1/2 quart per 3500 miles.  I'm not sure if Auto-RX somehow conditioned the valve seals or if possibly I had some sticky rings.  Either way, I'm impressed with the results..

Thanks for a product that works as advertised.  

Cliff Marano