At average 500 mile range per tank I couldn't go 3000 miles in 30 days to take advantage of the challenge. What is the mix ratio of XFT? How long on average does the product take to start working? (Miles vs. Run Hours?)
If something works I'm all for it. I see a six tank bottle is $36 at the link, if I were to try it I would calculate effective cost/mile to determine cost/benefit ratio.
With the ever changing cold weather, now is not the time for realistic testing. Depending on the answers to above I might be willing come late spring, early summer when the tolerances of non-controllables are closer.
Again, keep in mind I've tested several products against claims and have found no gain. Some of these include Slick 50, Z-Max, Royal Purple, and a jug of a fuel conditioner I can't remember the name of with out a hint of additional fuel mileage in the street vehicles or a reduction in Elapsed Time with my Cuda on the track against the clocks. So, yes, I am quite sceptical. However, progress is progress and if there's a cost/mile benefit, I'll give it a shot. If it works, I'm friends for life!
Update: Just did some on line research and came up with some answers.
At .25 oz/20 gallons, a six tank test would equate to 120 gallons used. At an average cost/gallon of $3.25, realizing 15.0 mpg, the cost of fuel per mile is 21.6 cents. (Total fuel cost $325 divided by 1800 miles) The break even point after adding $36 for XFT (if the 6 tank test bottle is a 1.5 oz bottle) would require 16.383 mpg on the same number of fuel gallons. This equates to 16.383 mpg or a 9.2% increase in mpg. Is this doable? Perhaps.
Now the faster burn benefit has me curious. Higher octane fuel burns slower to prevent detonation in high cylinder pressure conditions such as our engines provide during high load/high boost pressure conditions. If the ignition temperature is lower, could that not cause detonation resulting at best in PCM generated spark retard and subsequent equalization of power output? I do know that if the burn is controllable, yet faster, and able to provide max burn rate before the 15 degree ATDC sweet spot for maximum rod/crank leverage moment, then more effective power will be produced. That is the theory behind E3 spark plug technology. Its not a faster burn, necessarily, but a more effecting light resulting in efficiently completing the burn sooner that results in a higher horsepower output.
Higher horsepower output will result in less necessary throttle input which results in less fuel usage for similar energy production. This would show in the mile per hour level at the finish line on the drag strip timers and the fuel economy results on the street.
Interesting food for thought. What is XFT compatability and effectiveness with E85?