[MattHelm21]

I used an air deflector on my 2000 gas 454 dually CC 3500 Silverado. This truck was really stressed while pulling a 13,000 lbs fifth wheel. The pin was light as well. All that meant that it would develope a major chucking problem and the driveline was always pulling hard. I decided to try the deflector not for fuel mileage but to upset the balance(or lack thereof) which was excaserbating the chucking. By transferring some of the drag from the front of the fiver, to the tow vehicle, I think I was successful. There was an added side effect that bugs were pushed up and over the front of the fiver.

When I upped the game to a 2004.5 Duramax/Allison CC Dually 3500 Silverado, I transferred the roof deflector and was very pleased with the bug situation(or lack thereof) on the fiver. However, the chucking situation was never a problem with this combination.

Now with the F450 and the Fuzion, I no longer use the roof deflector. I’ll be honest in that I’m curious what the result would be using it but I don’t feel it would provide any benefit other than pushing debris up and over the front cap. The company which makes it is no longer in business and I can no longer by a mounting kit for it.