mikejuandababin Report post Posted March 25, 2014 I saw the advertisement for the Fuel Saver Device. Have any of you used it? I would like to know the results and if it is worth buying. Mike Share this post Link to post Share on other sites
BillAdams Report post Posted March 25, 2014 Which of the 10,000 scam fuel saver devices are you referring to? Share this post Link to post Share on other sites
wildebill308 Report post Posted March 25, 2014 Welcome to the forum, Mike. Need more info what are you going to use it on, etc. As a general rule, I have seen little benefit in fuel saving devices. Bill Share this post Link to post Share on other sites
partsrod Report post Posted March 25, 2014 Best fuel saving device is your right foot. Share this post Link to post Share on other sites
mikejuandababin Report post Posted March 25, 2014 (edited) The Fuel Saver Device (FSD) is an advertisement in the March 2014 issue of Family Motor Coaching magazine, page 99. The ad says that tests on a 435-horsepower Cummins diesel motorhome resulted in an increase in mileage from 5.7 mpg to 8.3 mpg.That sounds good, if it is correct. Looking for someone who is using the FSD. Thanks.Mike Edited March 26, 2014 by FMCANationalOffice Removed all caps Share this post Link to post Share on other sites
mikejuandababin Report post Posted March 25, 2014 Bill, I will be using it on a C9 400-horsepower Caterpillar engine on a 2006 Country Coach motorhome. Share this post Link to post Share on other sites
BillAdams Report post Posted March 26, 2014 I can tell you is that if there was ANY device that would allow a Cummins to get that kind of an MPG increase, Cummins would be using it. That's an absolute. If you keep that in mind, you can pretty quickly separate the wheat from the chafe.I suspect that it's simply an ad and nothing more than any of the other ads that claim magical improvements. They still suck folks in despite the fact that their claims have no basis. Share this post Link to post Share on other sites
lmsooter Report post Posted March 26, 2014 I just looked at the ad in the FMCA magazine. I tried the website listed www.fuelsaverdevice.com but at the bottom of the page it says, "This Domain May Be For Sale." I then tried www.fuelsaverdevice.net and found the device. They give two examples and then the usual disclaimer: "Each example depends on driver habits and environments. Results will vary." It supposedly works by increasing fuel vapor density. Now if someone can explain that it might mean something. I am not anywhere an expert on engines but I would think the only way to increase vapor density would be more fuel or less air. Share this post Link to post Share on other sites
wolfe10 Report post Posted March 26, 2014 Ya, nothing on their "how it works" page that gives much of an explanation. Not sure what "increases the vapor density" means-- more fuel injected perhaps?? Other than from the injectors, there is no "vapor" in a diesel and their explanation lumps gas and diesel together. Share this post Link to post Share on other sites
huffypuff Report post Posted March 26, 2014 They don't even show the device. For all we know it could be pour in your tank once snake oil. Share this post Link to post Share on other sites
kaypsmith Report post Posted March 26, 2014 I'm with Bill, if it worked that well, Caterpillar would already be using it. I'd definitely leave the price in the pocketbook, go light on the right, make sure air filters ar kept clean, and turbo working correctly. Share this post Link to post Share on other sites
desertdeals69 Report post Posted March 26, 2014 I have found that those people that buy and install these type of devices tend to drive with a lighter foot and will realize some increase in mpg but that increase is not from the device. I have tested a number of different devises and have not seem any increases under the same driving conditions. I have never spent a dime on these devices but have tested for various mfg and individuals. Share this post Link to post Share on other sites
N8VTXN Report post Posted April 8, 2014 One of the best fuel saver devices is a good working and often used tire pressure gauge! Share this post Link to post Share on other sites
rsbilledwards Report post Posted April 8, 2014 The "RIGHT Foot" is the winner here. B Share this post Link to post Share on other sites
