"You can add Diesel Tech magazine to the long list of testimonials as we're now believers in Archoil too.
"Improved fuel economy, smoother running engine and no issues with cold starts."
I have used Arch Oil with 87 octane gas rather than premium since I bought my 2014 Audi RS5 in June 2014. I got about 1-2 mpg better than projected by the manufacturer. I don't see it now because I drive too fast but the motor still pulls strong despite all the miles. A few milli-liters at every fill up cost about a dollar but saves $2-3 per fill up compared to buying 91-93 octane. I have been pleased with it. I put it in all the gas for my mowers, boat, chainsaw, generator and stored gas and it works better than Stabil, not to mention the gas stays fresh for several years.
One gas tank with AR6400 and follow through with AR6200 in the tank has given my 140K+ mile Ranger 2.5L 4cyl Lima engine smoother, more powerful, and better economy than when new. Fuel economy is about 7% higher than before treatment + AR6200 followup.
My Tacoma gets better fuel mileage. Going to try it in my diesel next to hopefully help with regens.
Made a BIG difference...smooth easy starts...Love this product
It takes 2-1/2 times as much of this product than the product that I got from you the last time. That means it cost 2-1/2 times as much to use.