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General Discussion of preventative/corrective maintenance and other technical issues regarding your coach that are not covered in other Mechanic's Corner categories (ex. refrigerators, water heaters, and compressors).

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  #1  
Old 05-19-2013
yesmar's Avatar
yesmar yesmar is offline
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Smile Fuel Saver Device

Anyone know anything about FSD (fuel saver device). www.savefueldevice.com is their web site.

They claim: increase mileage from 5.7 to 8.3 mpg
Reduction in exhaust emissions
Does not void warranty

I am 99% certain this is just a separator deal, designed to separate ignorant people from their money, but the penny pinching tendencies that I have, force me ask you guys "CAN IT WORK?"

I can understand increasing air intake and decreasing exhaust pressure can improve performance, but I have a problem believing something inserted in the fuel line can do this.

Can I believe it or not?
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2000 LXI (sold)
1993 Wanderlodge(Sold)
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1997 Marathon
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  #2  
Old 05-19-2013
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Rob Robinson Rob Robinson is offline
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Quote:
Originally Posted by yesmar View Post
Anyone know anything about FSD (fuel saver device). www.savefueldevice.com is their web site.

They claim: increase mileage from 5.7 to 8.3 mpg
Reduction in exhaust emissions
Does not void warranty

I am 99% certain this is just a separator deal, designed to separate ignorant people from their money, but the penny pinching tendencies that I have, force me ask you guys "CAN IT WORK?"

I can understand increasing air intake and decreasing exhaust pressure can improve performance, but I have a problem believing something inserted in the fuel line can do this.

Can I believe it or not?
I think you nailed it Richard..........'separator deal'
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  #3  
Old 05-19-2013
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Richard, I would not spend my $ on it. I would bet there is a list of other things you should do after install this Voo Doo device. Such as No jack rabbit starts, coast to a stop, drive at 55, lighten the load, proper air pressure in your tires or even add more air pressure. Your result my vary.
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  #4  
Old 05-19-2013
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NealinNevada NealinNevada is offline
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I was given one to test on my heavy truck...paid nothing for it. I keep fastidious records (hundreds of fill-ups and thousands of gallons of fuel). Ran it for a season (March to Oct) averaging 450 miles per day(Reno, NV to Redding, CA and back). When compared to the previous four years, in the same seasonal period, saw absolutely no difference in fuel mileage. Same run, same truck, same engine, same driver.

Am I saying this would be the results in every engine/transmission combination? No. I am saying for me it did nothing.

I've got a white paper somewhere on one of the computers, that goes through things to do for increased fuel mileage in commercial diesel applications...if anyone wants it I will be glad to post it.

EDIT: Here (attached) is the MPG White Paper.
Attached Files
File Type: pdf cummins_secrets_of_better_fuel_economy.pdf (964.6 KB, 650 views)
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Last edited by NealinNevada; 05-19-2013 at 02:52 PM.
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Old 05-19-2013
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Endless Summer Endless Summer is offline
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On their web page, the false claim that piqued my attention was "no more turbo lag".
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  #6  
Old 05-19-2013
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yesmar yesmar is offline
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Smile

Thanks for the GOOD information.

I figured they took the MPG readings before going up a 6% grade and took the after MPG reading going down the 6% grade.

If it is too good to be true, it probably is.

Thank you for saving me money.
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Richard Ramsey,

Yesmar@fairpoint.net
Eight 5 zero four four 7 one 7 zero zero
1994 Wanderlodge (sold)
2000 LXI (sold)
1993 Wanderlodge(Sold)
2004 M380 (FOR SALE)
1997 Marathon
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  #7  
Old 05-19-2013
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Richard, you aren't thinking about putting a motor in your Jayco are you
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  #8  
Old 05-19-2013
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Quote:
Originally Posted by yesmar View Post
Anyone know anything about FSD (fuel saver device). www.savefueldevice.com is their web site.


Can I believe it or not?
It's snake oil. There is only so much energy in gallon of fuel. (Yes, this can vary dependign on the manufacturer but the average is around 138,000 BTU/US Gal. As long as your not exhausting black smoke or white smoke, you are probably burning the fuel as efficient as the engine was designed to do. To optimize your energy efficiency you can do what others have posted such as properly filled tires, reduce weight, avoid jack rabbit starts and slow down (wind resistance has a big affect).

All of this is basic physics but the snake oil salesman will have you believe that dropping magnets in the tank, running the fuel through some molecular alignment device will improve fuel effiecency. Hogwash. The best you can do with a fuel supplement is to keep the injection system clean and therefore maximizing the fuel burn. However, this can do no better than a brand new engine or injection system can do. As I said, it just comes down to physics.

Save your money.

Tim
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  #9  
Old 05-19-2013
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yesmar yesmar is offline
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No. But the truck that pulls the JayBird (not Jayco) needs to get better mpg.

It was christened Jaybird by the powers that be at Flywheelers. Shane did the honors of applying the Bird decals which transformed it forever.

That silver tounged devil. Randy, almost sweet talked me into a bird about a month ago.
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Yesmar@fairpoint.net
Eight 5 zero four four 7 one 7 zero zero
1994 Wanderlodge (sold)
2000 LXI (sold)
1993 Wanderlodge(Sold)
2004 M380 (FOR SALE)
1997 Marathon
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  #10  
Old 05-19-2013
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I gave a bridge in Brooklyn for sale if you are interested

P.S
If you park your bus on it it won;t use any fuel at all, till you move it...
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