New Roof Increase Gas Mileage by 43%

[Bill_Diana]

Normally I average around 9 mpg with the motorhome. A few days ago I got a new roof. You can read all about it by clicking here to view the discussion.

Since getting the roof I have traveled about 500 miles in the past two days and my mpg has increase by 43% to 12.9 mpg. I never expected a shiny, smooth roof would increase the mpg by that much.

[pnichols]

I get a lot better mileage when I remember to crank the TV antenna down before getting under way. :R

[SaltiDawg]

Artum Snowbird wrote:
I have heard of that too... one other fellow wasn't as happy as you though. He said they put the roof on back to front and got 25% less for mileage. The installer said he couldn't tell the difference and wouldn't fix it!

lol

True story. A fellow Grad Student and I built a scale model of a Clipper Ship ("Herald In The Morning.") to test in the MIT Tow Tank... long story.

Bottom line, the technician operating the tank towing mechanism noted that there was less drag when returning the model to the head of the tank for the next run.

It actually had better performance going astern than ahead! (It had no rudder or other appendages.)

PS We did not win The Great MIT Boat Race of 1975 anyway.

[Huntindog]

I changed out the old air in my tires. Fresh air makes my rig ride much smoother

[downtheroad]

I had them spray nitrogen on our roof while I was getting nitrogen aired into the tires....Mileage went from 11 to over 20.

[wa8yxm]

You may be joking but... You'd be amazed at how much damage a coat of Wax can do to Big Oil's profits

Or if you like GOOD for your MPG.

[Bill_Diana]

Splashers3 wrote:
On the serious side of things I wonder if you would have noticed any difference in the inside temperature of your RV.

The additional comments were pretty funny.....agree the OP should have waited longer and let things play out.

I've only had the new roof for 2 days so have not been able to determine if there is any insulation benefit. The shop owner told me I will notice an improvement in insulation. I'll learn more as we camp in the coming months.

[Artum_Snowbird]

I have heard of that too... one other fellow wasn't as happy as you though. He said they put the roof on back to front and got 25% less for mileage. The installer said he couldn't tell the difference and wouldn't fix it!

[MEXICOWANDERER]

How long it takeya to hose off the mudslide?

[RJsfishin]

In reality, I didn't find that all that hard to believe.
I got 1/2 that much just doing a wash job one time.

[Splashers3]

On the serious side of things I wonder if you would have noticed any difference in the inside temperature of your RV.

The additional comments were pretty funny.....agree the OP should have waited longer and let things play out.

[RoyB]

I was going to respond with comments about FLUX CAPACITORS and DILITHIUM CRYSTALs.

I have also heard that playing your radio very loud will reduce some road weight on the vehicle giving you better gas mileage as well...

And of course here in North America you always get better gas mileage going south then you do going north...

[hammick]

I put Vaseline on my tires and now I get 20mpg with my diesel.

[Jaxom]

Did your new roof have the Teflon coating?
I Put on a belly pan with a Teflon coating & I got a 37% increase.

[MEXICOWANDERER]

Not on this board! Merry Pranksters! Every morning I look in the mirror and say to myself...

"Don't take yourself too seriously"

Wotta setup, better than a kick me sticker...

I can take it.