Hello. Here are the results. I see about 1-1.5 mpg gain measured at the pump. What kills our mileage is sitting in traffic or a drive through. With that said, sitting through a normal week of backups I am seeing a gain of 1-1.5 mpg when I fill up. This will surely pay for itself. I am out about 70 bucks in total. I have my fan wired to run soley on the thermostat so when I shut down the fan stays on for a couple minutes to help cool the engine quicker.
Let me know if anyone has any questions.