Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-31-2008, 03:53 PM   #1
Winnie-Wise
 
hamguy's Avatar
 
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 263
I have kept careful records about expenses on my '02 Suncruiser since I bought it used in 2004.

This includes mileage by the fill and a running average over the 4+ years.

I have had individual fills showing upwards of 8.5 MPG but those were on smooth level freeway runs with a tail wind and often not towing the car.

But, suddenly I an getting very good mileage in mountains and against head/side winds.

Ths only thing I have done is FINALLY adjust my steer-safe unit. I have had a bad to severe pull to the right for 2-3 years and finally got fed up with it.

Since it was properly adjusted, my calculated MPG has risen to ~7.7 over 900+ miles.

I guess my only question is, could the steer-safe being misadjusted cause that much (0.5+ MPG) difference? My driving habits have not otherwise changed.

Comments anyone?

Dean
__________________
Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote
Old 05-31-2008, 03:53 PM   #2
Winnie-Wise
 
hamguy's Avatar
 
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 263
I have kept careful records about expenses on my '02 Suncruiser since I bought it used in 2004.

This includes mileage by the fill and a running average over the 4+ years.

I have had individual fills showing upwards of 8.5 MPG but those were on smooth level freeway runs with a tail wind and often not towing the car.

But, suddenly I an getting very good mileage in mountains and against head/side winds.

Ths only thing I have done is FINALLY adjust my steer-safe unit. I have had a bad to severe pull to the right for 2-3 years and finally got fed up with it.

Since it was properly adjusted, my calculated MPG has risen to ~7.7 over 900+ miles.

I guess my only question is, could the steer-safe being misadjusted cause that much (0.5+ MPG) difference? My driving habits have not otherwise changed.

Comments anyone?

Dean
__________________
Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote
Old 05-31-2008, 04:22 PM   #3
Winnebago Master
 
Finhawk's Avatar
 
Join Date: Jan 2008
Location: Olympia, Wa and Las Vegas, Nv for the Winter
Posts: 567
My question would be, how much wear shows on your front tires? If you had that much drag, you shouldn't have any rubber left!
__________________
2012 Itasca Meridian 42E, Roadmaster Tow System, Unified Brakes on Toad
2011 Jeep Grand Cherokee Overland. US Army Armor. Ret
Finhawk is offline   Reply With Quote
Old 05-31-2008, 05:08 PM   #4
Winnie-Wise
 
hamguy's Avatar
 
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 263
I did replace the tires last year and they did show some wear. The new tires also show dome but not inordinate wear IMHO.

Still scratching my head.
__________________
Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote
Old 05-31-2008, 05:27 PM   #5
Winnebago Owner
 
ROMAD's Avatar
 
Join Date: Aug 2007
Location: Killeen, TX
Posts: 84
How did you adjust the Steer Safe to eliminate the pulling?
__________________
Gene
MSgt USAF Retired
2012 Winnebago Sightseer 33C F-53
ROMAD is offline   Reply With Quote
Old 05-31-2008, 06:14 PM   #6
Winnie-Wise
 
hamguy's Avatar
 
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 263
I took it to someone who knew what he was doing (as opposed to me). East Valley RV in Mesa, AZ.
__________________
Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote
Old 06-01-2008, 08:51 AM   #7
Winnebago Master
 
Join Date: Dec 2005
Location: Buxton, North Dakota
Posts: 1,037
I think we are getting better gasoline. In the last month I have seen all of our vehicles getting better mileage. Haven't had the motorhome out, but will in two weeks and see what happens. Out Hyundai Accent is getting close to 35 mpg, formerly we could never get more than 31 to 33mpg. Our Ford Windstar now gets over 20 while before it was 18 to 19mpg.
__________________
2003 Winnebago Adventurer 38G F53/ V10 605 watts of Solar
1999 Winnebago Brave 35C Handicap Equipped
F53/V10
1999 Jeep Cherokee & 1991 Jeep Wrangler Renegade
John Hilley is offline   Reply With Quote
Old 06-01-2008, 01:32 PM   #8
Winnie-Wise
 
Ding-a-ling's Avatar
 
Join Date: Aug 2004
Location: Zephyrhills, FL
Posts: 275
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by John Hilley:
I think we are getting better gasoline. </div></BLOCKQUOTE>
Do the refineries not have a different formulation for winter and summer for the more northern states?

Maybe that's why, John.
__________________
'14 Winnebago Vista 35F, '14 GMC Terrain
BlueOx Towing Pkg, SMI Stay-n-Play
49 States & 7 Provinces visited in MH | WIT W112365
Ding-a-ling is offline   Reply With Quote
Old 06-01-2008, 01:46 PM   #9
Winnebago Master
 
MrTransistor's Avatar
 
Join Date: Jan 2004
Location: Albuquerque, NM
Posts: 504
By chance, does the local government in your area require 10% ethanol in gasoline in the winter months to średuce' CO emissions? If so, I believe that most of these requirements are effective for the winter months only and should have lapsed for the season. This could very well explain why you are seeing a 5% to 10% increase in mileage.

Here in Albuquerque, I can't wait till the end of February for the mileage to go up in our car, generally from 24.5 MPG to 26.5 MPG.

Ethanol contains around 33% less heat energy content than gasoline and it's the heat energy that gets you down the road. Diesel for comparison contains about 11% more heat energy than gasoline per gallon plus the diesel combustion cycle is more efficient than the Otto combustion cycle. Hence the diesels generally can get about 30% to 35% better mileage than a gas vehicle all other things (i.e. weight, frontal area, etc.) being equal.

I really can't see the argument for gasohol since it seems like the lower mileage would surely offset any improvements in emissions especially with newer engines designed to reduce CO levels to below 4%. Its an awfully wide brush to cover the occasional 1929 Nash Victoria on the road these days.

Heat content in BTUs/gallon
Diesel = 138,700
Gasoline = 125,000
Ethanol = 84,600
Gasohol = 120,900
__________________
Have Fun!! Mark & Donalda 04 Horizon 40WD no TOW 90,900+ miles and counting
Triumph Bonneville & Susuki S40 on the back
MrTransistor is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Winnebago View MPG report SeeTheUSA Winnebago Class C Motorhomes 8 03-15-2009 09:57 AM
Think Ton MPG instead of MPG MrTransistor Winnebago General Discussions 6 03-02-2008 07:24 AM
MPG and Tire Pressure KIX Running Gear, Axles, Brakes, Wheels and Tires 16 11-12-2007 01:36 PM
7.7 MPG John_Canfield General Maintenance and Repair 21 09-25-2007 04:59 AM
Cause for drop in mpg? Doggievet Winnebago General Discussions 6 07-29-2005 01:00 PM

» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Winnebago Industries or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 01:24 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
×