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01-30-2018, 04:31 PM
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#1
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Member
Join Date: Jan 2018
Posts: 33
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1999 Forest River Gasser, What can I expect in MPG?
New to RVing, I recently purchased a 1999 Forest River Windsong 370, 37 foot, with a tag axle, Vortec 454 with a 4l80e transmission. I had had it in the shop and had all the little bugs and known problems fixed. The auto-park being the biggest issue. We are finally going on our 1st trip next month, and I am just curious as to what kinda MPG i will see out of this coach. I'll will be pulling a 2800 lbs Honda insight. Thanks.
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01-30-2018, 04:38 PM
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#2
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Member
Join Date: Aug 2017
Posts: 86
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For figuring for a trip I use 6 mpg. That kind of takes care of everything ie: mountain road and winds.
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01-30-2018, 06:11 PM
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#3
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Senior Member
Forest River Owners Club
Join Date: Dec 2010
Location: Livingston, TX
Posts: 1,088
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Picture????
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01-30-2018, 06:17 PM
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#4
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Senior Member
Winnebago Owners Club
Join Date: Dec 2015
Location: Jacksonville, Fl
Posts: 3,542
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Plan or 6 or 7 mpg.
__________________
2013 Winnebago Sightseer 36V
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01-31-2018, 07:21 AM
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#5
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Member
Join Date: Jan 2018
Posts: 33
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Thanks all, that is kinda what I figured, but I was looking on fuelly.com and saw some post higher numbers so I was curious as to what some on here were getting. as to posting a picture, still trying to figure that out.
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01-31-2018, 07:29 AM
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#6
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Member
Join Date: Oct 2016
Location: Aurora, CO
Posts: 69
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To see what hills are in your path, found great site: www.flattestroute.com
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01-31-2018, 07:43 AM
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#7
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Member
Join Date: Jan 2018
Posts: 33
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OK, I' hoping this uploads a photo. only one I currently have of the rig, taken when we picked it up at the rv dealer, it was a trade in that I feel I got a fantastic deal on.
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09-05-2018, 03:53 PM
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#8
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Registered User
Join Date: Aug 2016
Location: Seattle,WA/HB,CA./Fujieda-Japan
Posts: 849
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FYI:
Just returned from trip from Renton, WA. to Fern Ridge Lake (Eugene, Or) Richardson Campground.
Going down had tailwind...
312 miles = 9.75mpg (US 32gal)
Coming back headwind....
283 miles = 8.84mpg US
Average speed 58mph (P30 454 TBI w/4L80E trans) OD @ 57,984
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09-05-2018, 04:15 PM
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#9
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Senior Member
Workhorse Chassis Owner
Join Date: Sep 2017
Posts: 2,156
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Quote:
Originally Posted by datsun78
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Unfortunately flattestroute is no longer available. 
__________________
2003 34' Georgetown on W20 Workhorse Chassis. UltraRV power mods. Doug Thorley Headers and MagnaFlow 12589 mufflers. Front Sumo Springs, Rear P32 Sumo Springs, UltraRV Track Bar.
1998 Jeep Toad.
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09-05-2018, 06:54 PM
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#10
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Registered User
Join Date: Aug 2016
Location: Seattle,WA/HB,CA./Fujieda-Japan
Posts: 849
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Correction on the return MPG's....just filled and the total fuel used was 31.7gal for the course of 283 miles for an average of 8.92mpg 
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09-10-2018, 12:22 PM
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#11
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Member
Join Date: Jan 2018
Posts: 33
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since our purchase we have gotten to make 2, 10 day trips, one to Florida and one to New Orleans, both reasonably flat routes and I got a little over 9 mpg round trip, I'm completely satisfied with that. end of this month were heading up to Nashville, then over to the Smokies, overall I've been happy with the RV, I figure use it maybe 2 more years and then upgrade to a diesel.
__________________
1999 Forest River, Windsong 370S.
Cullman Alabama.
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09-13-2018, 07:54 AM
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#12
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Senior Member
American Coach Owners Club Spartan Chassis
Join Date: Aug 2016
Location: Virginia
Posts: 202
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wow, that is good gas mileage. Our summer trip was just over 2700 miles and included mountains in PA and NC and flat land in MI and OH as some rolling hills in MD, VA, KY. For the trip we averaged right around 7 towing our Equinox toad. Low was around 6.5 doing the mountain areas and 7.5 on the flattest sections. We have the Ford V10 and a 5 star towing tune and use tow haul mode for almost all driving when the toad is attached.
Enjoy the new MH. They aren't much fun sitting in the driveway!!!!!!
__________________
2006 American Coach Eagle 42R
2017 Jeep Cherokee Trailhawk Toad
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09-13-2018, 08:36 AM
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#13
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Senior Member
Join Date: Mar 2015
Posts: 124
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On my 1998 Georgetown with the vortec 454 I averaged in the 7 mpg range
__________________
2014 Georgetown 351DS
Charleston SC
1 Boston Terrier, 1 Frenchie
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09-13-2018, 12:38 PM
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#14
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Junior Member
Join Date: Sep 2018
Posts: 1
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We just went from Oregon to Alaska 2900 miles in a 37' Fleetwood Pace Arrow V-10 and averaged 7.5 mpg. We got as low as 6 and as high as 9. Not towing anything.
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