Hello Frank,
I've got a quick story for you about my success with Auto RX.
I'm the original owner of my 1999 Dodge Grand Caravan with a 3.8L V-6, it was purchased new in July of 1999. I love this van.
In 2005 I bought three bottles of Auto RX for the van that at the time had 200,000 miles on it. I treated the engine and the transmission. The third bottle I used for maintenance doses.
At that time I really couldn't tell if it worked or not because I had just discovered Bob Is The Oil Guy website and I think I got a little hurried and I changed the out Auto RX too soon during the clean phase. I know I didn't follow instructions to the letter back then.
A couple years later, this winter, I decided to try it again and this time I would actually do the two bottle method for high mileage engines and follow the instructions to the letter.
I started a second 2 bottle treatment this past January at 307,000 miles.
The van now has 321,000 miles on it with the original engine and transmission. Neither the tranny or the engine have been touched other than routine maintenance. Still runs great. 400K can't be far off.
As it stands, I think I now hold the world record for a Chrysler minivan transmission! And perhaps even engines!
This winter when I started the first of the two bottle method of the cleaning phase, I developed a little oil leak around the crank seal and I became a little worried. I even went to the dealer and bought a new seal just in case it got worse, but I followed your directions and tried not to worry and now that the two treatments are done, the oil leak has stopped!
I am now convinced that Auto RX gets in there and cleans! Oh, and does it run better? Yes. Smoother, quieter, and the ticking on start up has gone away.
I've just ordered 2 more bottles to begin a maintenance dose for a while and perhaps run a little in the transmission again.
Sincerely,
Brian