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Old 11-03-2005, 05:32 AM   #15
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We have 04 36MDDS w/400 towing Honda Element. On our trip to "Homecoming" from So. Cal we averaged 9.1 mph. Total trip 2767 miles, lowest mpg 8.47 and best 10.27. Coach has 13,000 miles on it. Needless to say we are very pleased with mileage and performance. Our driving varies from steady 58 mph following Chuck and Pat to 70 plus following Tom and Patty . We do not have Silverleaf VMS

Mike and Nancy
2015 Newmar Dutch Star 4018
2009 Hummer H3 Alpha
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Old 11-04-2005, 12:43 PM   #16
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I am getting about 6-7 miles towing the Excursion PSD (8,300 lbs) with heavy foot.

05 ISL

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Old 11-05-2005, 08:00 AM   #17
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We have a 40' 1999 FDS with a 350 hp pulling a 25' carhauler weight about 10,000 lbs. We average about 15 mpg, 8 hwy 7 city. Bob & Debbie
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Old 11-05-2005, 08:02 AM   #18
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We have a 40' 1999 FDS with a 350 hp pulling a 25' carhauler weight about 10,000 lbs. We average about 15 mpg, 8 hwy 7 city.
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Old 11-05-2005, 08:03 AM   #19
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Sorry about the
dbl post
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Old 11-05-2005, 04:03 PM   #20
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pdiddley - I like your math. Must be what they are teaching in school now-a-days.
'01 Alpine 36 FDDS
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Old 11-06-2005, 05:21 AM   #21
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I feel much better about my mileage using his calculation
2004 Alpine 34 FDDS
Anaheim Hills, CA
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Old 11-06-2005, 12:06 PM   #22
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We just returned from our Homecoming trip of 3342 miles. Used 422 gallons for a 7.9 mpg. Cost was $1323. Lowest price was $2.90 and highest was $3.48. Averaged $3.13. Would have most likely made it 8 mpg had we not taken a senic route through Cedar Breaks at 10,400 feet. Hooray for the 400 ISL and Jake brakes. Will be at the Desert Rat rally and I know I'll get 10mgp. (downhill almost all the way)

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Old 11-13-2005, 11:02 AM   #23
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Having enjoyed 2 plus weeks at "The Palm Spgs of WA",debugging (read fixing a lot of stuff after an expensive trek across country)I will expand on the higs and lows in a seperate posting. But as I have taken credit for agressive driving and the resulting poor MPG, I wanted to add an item here. My coach was not programed for Hi & Low exhuast prior to delivery so the Cummins tech was called over to do so. We talked about my mileage and the somewhat rough shifting of my transmission; so he ran a diagnostic test with his laptop. Seems like some genius set up the computer for a Std (manual) transmission. The number of Class A RV's with manual trannys is probably equal to the # that are problem free! Mike reprogramed my template and said I should see improvement in MPG and shifting. As I head south the shifting is smoother will see on the other!
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Old 11-13-2005, 07:35 PM   #24
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Just returned home to IN from Yakima for factory pickup of 05 40FDQS towing GMC 1/2T EXT CAB LB 4X4. Averaged 7.6 MPG for the 2600 mile trip per Silverleaf system installed at J-City. Silverleaf system also indicates an average speed was 53 MPH. This unit now has over 8K miles on it.

Other items of note during shake down was:
- Newort OR
Inverter locked up, would not recognize shore power, would not charge batteries. Indicated fault 65 on inverter. Guaranty removed 300A fuse so inverter memory would reset to default settings.

- Western WY
Jacks down and jack panel dead, slides would work, jacks would not. Found 5 pin connector disconnected from HWH jack panel, reconnected same and jacks working again.

-Western Iowa
After departing RV park and just making turn onto the on ramp for I-80, engine died, no power steering or brakes. Just managed to musle turn before going over embankment. Set parking brake. Engine restarted and ran o.k. rest of way home. Silverleaf system indicates ECM power failure. The engine dying had happened 3 times before while at factory, service tech witnessed it the first time it happened. The factory was unable to find any problem, but this was before the Silverleaf system was installed.
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Old 11-14-2005, 10:49 AM   #25
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WE HAVE 350 CUMMINGS On a 40 ft alpine 2001 trvel always at 60 mph and consistanle get 9 to 10 miles per gal

Harold Mallet
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