The quart can of TruFuel saved me crossing Kansas on Labor Day. We hit the strongest head winds I have ever riden in. The fuel mileage on my FW dropped to 31-32mpg and I did not realize it. We were planning on stopping & I ran out 5 miles short of our stop. Well worth $5.99 to have it to save my 650 mile day on the road. My next adventure, I will have another quart.