On Sat, 06 May 2006 00:36:54 GMT Sandy A. Nicolaysen
> wrote in article
> :
>
>>>>
>>>I see where Sandy A. Nicolaysen contributed:
>>>
>>>>Anybody had any luck with those big spoilers mounted to the roof of >>>>the truck cab?
>>>
>>>The "spoilers" work great, which is why they are virtually standard
>>>these days on Big Trucks. You might see 3-5% better mileage on yer
>>>Kenworth, according to industry "experts". Lessee, 4% of 6mpg boots
>>>you up almost 1/4 of a mile per gallon. Not bad.
>>>
>>>HOWEVER, they are as worthless as a campaign promise if not correctly
>>>sized, close enuf to yer trailer, and the right height and angle. In
>>>fact, if they're not right in all respects, you get NO mileage
>>>benefit. Before paying yer $$$$$$$$, get the peddler to offer a good
>>>guarantee that it will do the job. IMO, virtually all available
>>>units are eye candy sold via hype.
>>Will: I suspected exactly the same thing, otherwise every RVer would
>>be using them. That's why I asked.
>>
>>One thing that seems to work is be keeping the speed down. This past
>>weekend a round trip from Princeton NJ to Knoebels Groves in Elysburg
>>PA netted a solid 8.9 MPG by limiting my speed to 60 MPH. I used to
>>get ~7 MPG trying to keep up with the truckers.
>>
>>>
>>>BTW, congratulations on the Bigger Better RV Combo!
>>Thanks! After two TT's, it should be a different towing experience. >>
>>Regards, - Sandy
>
>
> Two years ago I took a Blue Road trip to Florida. F350 dually, 13,000
> fiver. Running the speed limit, mostly 55, I averaged around 10 miles
> to the gallon. Running the highways at 60-75 mph, my mileage drops to
> around 8 mpg. That's a 20% decrease.
>
> As far as a fairing goes, save your money. The front cap of the fiver
> will do a better job.
> --
> Frank Tabor
Maybe he's just to improve the looks of the Cheby!!! It won't help though.