RigGuard...

No hard feelings... Disrupting the incoming airflow on a aerodynamically engineered piece of equipment is never a good idea.... Good Luck

 

I agree with you wonderdog that it does hurt mpg. But, like Treputt said. Even on a dedicated run with the same load with same route. There are still alot of factors that effect mpg. The biggest one being driver habits.

 

Why do you keep mentioning 2.5%? You initially said this:

So I wanted to know where you got your numbers from. I mean, do you have any actual links to controlled studies on what MPG loss one gets with a deer guard installed? Or is it just one of those "I know a guy, who has a cousin, who's uncle's sister's dad drives a truck and he said he be gettin bad gas mileage with them deer gates on his truk"

Rhetorical questions, all of them.

 

What do you think is the effect of the Deer guard on a truck????

 

Unless you hit a deer! The one that got my company truck totaled the hood.

In my 2012 Cascadia without a guard I ran 7.2 MPG last summer (And spent ~$1,000 on a crappy after-market bumper after hitting a dog). In the short time that I've had this 2014 Evolution, with deer basher, I'm averaging 7.8 MPG. Yes, I know that it has to hurt fuel economy some. But it's not hanging out in the slipstream like side mirrors or bug deflectors. If I can maintain this kind of fuel economy with the added protection from deer strikes, I'll be happy!

 

The new RigGuards are designed to be more aero friendly. Saw them on the '15 Cascadias.

 

I've averaged 8mpg this week and I haven't been trying particularly hard.

if I slow down to 55, I imagine I could get 9 easy.

 

My last trip home I set the cruise at 10 mph and got 75 mpg. I mean it took 3 weeks to go 1200 miles, but 75 mpg is awesome!

 

More like 5.7 mpg at 10 mph. Low gears tear up the fuel.

 

It was downhill the entire trip....