Received August 18 2016

Jack,

After painting them to match the cap, I added 12 air tabs across the rear top of the truck cap on my 2016 F350  crew cab 4×4 with the 6.2 liter engine, 4.3 rear end. My driving is about 75% interstate and I drive conservatively. My mileage improved from about 14.7 to about 15.2, using the vehicle’s computer. But when towing our 32′ Jayco, my mileage went from 6.8 to 7.4. I am very satisfied with this improvement. I do plan on adding the air tabs to the rear of the Jayco next year. Thanks

Joe
Reliability Engineer
Indiana