In a nutshell, yes. If your car or truck is not performing at the same fuel economy standards set forth as a new vehicle, this should be corrected. There are two very detailed tests that can be found within the Auto-Rx® web site that would confirm this "nutshell" answer.
One test was performed with a very low mileage Honda Civic, and the other test was performed using ataxi cab fleet. Both tests were performed in the San Diego, California, area where climate influence is very minimal. The weather at this location is quiet through the seasons, making it a good test location.
The case of the low-mileage Honda test involved a motor that had seen only short-interval driving habits over the first 10,000 miles of operation. View the detailed data on this test. The test was done to show the correlation of what cleaning up the ring packs on the motor could achieve. Data will show thatthe corresponding increase in compression and reduced emissions translates into better miles per gallon, with respect to fuel economy. You can see that much better compression numbers were achieved in this relatively young motor. You will also see a reduction in emissions, particularly hydrocarbons and carbon monoxide (CO), as well as an increase in carbon dioxide (CO2), which is an indicator of more complete combustion of fuel.
It is important to note that the motor achieved an additional 1.3 miles per gallon. In a very fuel efficient motor, a starting base line of 27.1 miles per gallon was transformed into a motor achieving 28.3 miles per gallon. Over the course of 5000 miles, the fuel savings were over $35.00, substantially greater than the investment in Auto-Rx®. The gain in compression and evening out of compression across all four cylinders sets this motor up for very good engine longevity. This test serves notice that Auto-Rx treatment very early on is quite beneficial. Better piston ring-to-wall sealing allows for not only better MPG, but puts your motor in a much better position to retard sludge formation in the future. Please note the additional MPG achieved running the maintenance dose in this young Honda.
On the other side of the coin, a more comprehensive test was done on a taxi fleet. This represents the other end of the spectrumvery high-mileage vehicles. Please look closely at Taxis #1 and #2 for the perspective gains in fuel economy. There is plenty of data to see that Auto-Rx®improved ring sealing, yielding MPG well beyond the cost of the product. This can be seen in the overall MPG figures, as well as the scan gauge that monitors gallons per hour consumption, which is useful due to the amount of time the vehicles sit at idle waiting for the next fare, such as at the airport. It is also worthwhile to observe that solvent flushes were used on a couple cabs as well, with no positive benefit to improved compression and resulting fuel mileage.
It is quite logical to assume that any vehicle with moderate mileage can benefit from Auto-Rx®.We have covered young motors under 20,000 on the clock, as well as old motors over 200,000 on the clock. Better ring sealing produces more efficient motors. In a testimonial from a Toyota Avalon owner, the results of her gain in MPG can be associated with a poor motor break-in. Most wont see that kind of improvement in MPG. However, in a test on a Harley V-Twin and the improvement in compression on a young motor, you can see how this was possible. The Harley motor went from a problematic 110 PSI per cylinder to a proper 160 PSI compression in each cylinder, a world away.
If you are not getting the mileage the EPA says you should for your car or truck, Auto-Rx® can be a big part of the remedy.