RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 07-22-2019, 04:08 PM   #1
Member
 
Join Date: Jul 2013
Location: NH
Posts: 97
Increase fuel tank size 2011 DutchStar

Has anyone looked into replacing or adding on to the existing tank?

For whatever reason, in 2011 I'm told that Newmar wanted to save weight and in their infinite wisdom, put a 100 gallon tank on my coach. It makes no sense.

I've got a 43' with a Tag and 400HP Cummins on a Freightliner chasis. On top of that I've got an Oasis furnace and obviously a genny. At 6.5 MPG, then to have a generator and hot water,/heat it's really questionable and not too practical why they went with a 100. It looks like there is room under there when I look to add more capacity.

Has anyone ever done it or looked into it?
__________________

__________________
2011 Newmar DutchStar 4324
400hp Cummins
Turbo38sfi is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-22-2019, 04:40 PM   #2
Senior Member
 
Join Date: Sep 2010
Posts: 3,315
We had a 97 London Aire with a 100 gallon tank but space for a 150. Two choices you have is get the 150 gallon tank from Spartan or what we did and that is build a 50 gallon tank installed right behind the regular tank. Filled 50 gallon tank from inside propane cabinet and added a fuel pump to pump the 50 gallon tank into 100 gallon tank when less then 1/2 full. Did up grade front tires for the added weight. Worked great for about 5 years. Could travel then 800 miles without any issues.
Newmar Man
__________________

__________________
Tom/Teri 16031 NKK 117995 FMCA
18 London Aire 4531 Spartan K-3 605
97-04 LA 04-18 Essex 2018 London Aire
tom chelbana is offline   Reply With Quote
Old 07-22-2019, 04:50 PM   #3
Senior Member
 
GaryKD's Avatar
 
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 13,478
Hi Turbo38sfi,
Consider contacting freightliner and see what they say. Remember 50 gallons of diesel weighs 355 pounds. Due to the position of the tank just about all that weight will be on the front axle.
__________________
Gary
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
GaryKD is offline   Reply With Quote
Old 07-22-2019, 06:45 PM   #4
Member
 
Join Date: Jul 2013
Location: NH
Posts: 97
Quote:
Originally Posted by tom chelbana View Post
We had a 97 London Aire with a 100 gallon tank but space for a 150. Two choices you have is get the 150 gallon tank from Spartan or what we did and that is build a 50 gallon tank installed right behind the regular tank. Filled 50 gallon tank from inside propane cabinet and added a fuel pump to pump the 50 gallon tank into 100 gallon tank when less then 1/2 full. Did up grade front tires for the added weight. Worked great for about 5 years. Could travel then 800 miles without any issues.
Newmar Man

Sort of what I was thinking except if I did a slave tank like that, I would connect the two at the bottom by a 4 or 5" piece of pipe so they would auto level between them. 100 is really not adequate.
__________________
2011 Newmar DutchStar 4324
400hp Cummins
Turbo38sfi is offline   Reply With Quote
Old 07-22-2019, 07:01 PM   #5
Member
 
Join Date: Jul 2013
Location: NH
Posts: 97
Quote:
Originally Posted by GaryKD View Post
Hi Turbo38sfi,
Consider contacting freightliner and see what they say. Remember 50 gallons of diesel weighs 355 pounds. Due to the position of the tank just about all that weight will be on the front axle.
It's definitely more forward than on the CG for sure but I can't see 350lbs being the deal breaker here. It doesn't make any sense. Not sure what FCC would say or where to ask it.
__________________
2011 Newmar DutchStar 4324
400hp Cummins
Turbo38sfi is offline   Reply With Quote
Old 07-22-2019, 07:01 PM   #6
Senior Member
 
Skip426's Avatar


 
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 18,515
JMHO: How many miles do you normally drive in a day ?
Even at 6.5 mpg, 85/90 usable gallons goes a long way . I fill up once a day on the road .
Is the upgrade to 150 gals , even if it doesn't over load the front axle , going to allow you two days driving between fill ups?
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 07-22-2019, 07:18 PM   #7
Member
 
Join Date: Jul 2013
Location: NH
Posts: 97
Quote:
Originally Posted by Skip426 View Post
JMHO: How many miles do you normally drive in a day ?
Even at 6.5 mpg, 85/90 usable gallons goes a long way . I fill up once a day on the road .
Is the upgrade to 150 gals , even if it doesn't over load the front axle , going to allow you two days driving between fill ups?
I just did 700 miles, NH to Ohio. First really long trip on the road before picking it up from FL. Running the generator the whole way. It just doesn't cut it.

My 2000 DS with 300Cat had 100 gal tank but got 8.5 to 10 if the generator was running or not so I could do 700 no problem.

It's really not the driving 2 days I'm looking for it's driving, stopping, staying for a night or 2 and not having to fill up again just to top off before hitting the road and HAVING to fill up. Just the flexibility of 50 more gals. is pice of mind to have a more than adequate reserve. Why would they put a 150 In the same coach thats a few years newer for all intents and purposes?

My friends 06 MA on a spartan has 150...same engine, 50 more HP and 50 more gals. Most 450HP do...I am not sure if they put them on the 400HP versions.
__________________
2011 Newmar DutchStar 4324
400hp Cummins
Turbo38sfi is offline   Reply With Quote
Old 07-22-2019, 07:20 PM   #8
Member
 
Join Date: Jul 2013
Location: NH
Posts: 97
Quote:
Originally Posted by Skip426 View Post
JMHO: How many miles do you normally drive in a day ?
Even at 6.5 mpg, 85/90 usable gallons goes a long way . I fill up once a day on the road .
Is the upgrade to 150 gals , even if it doesn't over load the front axle , going to allow you two days driving between fill ups?
I didn't answer your question...I normally will click off 12 hours, depending if it's a solo race car trip or a family trip at a min.
__________________
2011 Newmar DutchStar 4324
400hp Cummins
Turbo38sfi is offline   Reply With Quote
Old 07-22-2019, 07:21 PM   #9
Senior Member


 
Join Date: Sep 2016
Location: Sarasota, FL
Posts: 3,625
I have a 150 gal fuel tank and have realized on avg a 300 mile trip per 1/4 tank. We try to drive at or (preferably) less than 300 miles per day. We drive two stops until we need a top off again. (75 gals)
__________________
Rick and Larrie Dee
1997 40' Newmar London Aire DP CTA 8.3 (Mechanical) 325 Spartan MM
Bringing her back to her glory.
'08 Jeep GC Overland.
RKins is offline   Reply With Quote
Old 07-23-2019, 09:22 AM   #10
Member
 
Join Date: Jul 2013
Location: NH
Posts: 97
Quote:
Originally Posted by RKins View Post
I have a 150 gal fuel tank and have realized on avg a 300 mile trip per 1/4 tank. We try to drive at or (preferably) less than 300 miles per day. We drive two stops until we need a top off again. (75 gals)
That's nice...300 miles and I'm over half empty
__________________
2011 Newmar DutchStar 4324
400hp Cummins
Turbo38sfi is offline   Reply With Quote
Old 07-23-2019, 10:39 AM   #11
Senior Member
 
Skip426's Avatar


 
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 18,515
Quote:
Originally Posted by Turbo38sfi View Post
I didn't answer your question...I normally will click off 12 hours, depending if it's a solo race car trip or a family trip at a min.
A 12 hour driving day ...boy, you're a glutton for punishment.

I used to do those... 45 years ago.

Newmar , may have been overly weight shy, they had to recall my coach to replace under size tires and a member with a 2002 DS on Spartan had to have a front axle upgrade to correct an overload condition.
So before you go the " add a larger tank route " get your axle weights loaded for travel . Getting added range at the expense of coach handling due to overweight front axle , would be a true " Catch 22".
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 07-23-2019, 11:57 AM   #12
Senior Member
 
Jager's Avatar
 
Join Date: May 2015
Location: Vermont
Posts: 353
Oh boy . . . you just opened a flood gate. How much fuel does someone need? I recall a post on here a few years ago and 1/2 the people were incensed that anyone would need (or want) more than 100 gallons. Personally, I would NEVER buy a coach like this with less than 150 gallons. Our coach has 150 gallons and I can't imagine cutting that down at all. I rather like that Newmar now has a 200 gallon tank on some models. The more the better if you ask me. We have been parked at NASCAR races or other boondocking events for 1+ weeks running the gen set and heat some times. We also travel from US through Canada and back into US to get to certain locations (shortest route for us). Take your coach into Canada and fill it for a change of pace. With our fuel tank we can fill in the states and make it through Canada without buying any fuel.



Anyway . . . everyone has different needs but I'm with you . . . 150 gallons is needed.
__________________
Tom
2007 Newmar Essex 4510, 500 hp Cummins
Jager is offline   Reply With Quote
Old 07-23-2019, 07:49 PM   #13
Member
 
Join Date: Jul 2013
Location: NH
Posts: 97
Quote:
Originally Posted by Jager View Post
Oh boy . . . you just opened a flood gate. How much fuel does someone need? I recall a post on here a few years ago and 1/2 the people were incensed that anyone would need (or want) more than 100 gallons. Personally, I would NEVER buy a coach like this with less than 150 gallons. Our coach has 150 gallons and I can't imagine cutting that down at all. I rather like that Newmar now has a 200 gallon tank on some models. The more the better if you ask me. We have been parked at NASCAR races or other boondocking events for 1+ weeks running the gen set and heat some times. We also travel from US through Canada and back into US to get to certain locations (shortest route for us). Take your coach into Canada and fill it for a change of pace. With our fuel tank we can fill in the states and make it through Canada without buying any fuel.



Anyway . . . everyone has different needs but I'm with you . . . 150 gallons is needed.
That's exactly what I'm saying..if I boondocked a few days, plus driving, it's not even possible.

Looking at the brochures from a coach with a 150 gal vs. 100 gal, the front axle rating is higher - 14,600 vs 17,000. So that's a difference of 1200 lbs more per wheel. They are both on the XCR chasis, so I'm wondering if the tires differed. It's IFS so there is no "Axle" per' se. Anyone have any info on if the tires were different and thus the increased capacity rating. Would def. seem logical.
__________________
2011 Newmar DutchStar 4324
400hp Cummins
Turbo38sfi is offline   Reply With Quote
Old 07-23-2019, 08:01 PM   #14
Senior Member
 
NHRA225's Avatar
 
American Coach Owners Club
Join Date: Jan 2011
Posts: 2,369
Well 6.5 mpg sucks for sure ! I would look into increasing your Mileage before addressing a larger Fuel Tank. Hell ! I get 9 mpg with a 10 K trailer hanging on the back and almost 12 alone.
Look a possible Re-Tune on your Engine first . Just Me !
__________________

__________________
Chuck
Brownsburg Indiana
1992 American Eagle-8.3C-450hp
NHRA225 is online now   Reply With Quote
Reply

Tags
dutchstar, fuel, tank



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
Increase the in-floor battery compartment size? rssnape Tiffin Owner's Forum 2 11-18-2014 12:32 PM
22.5 Tire Size Increase, 2001 Diplomat MonteY Monaco Owner's Forum 3 12-10-2012 05:24 PM
2007 Camelot tire size increase??? studmuffin1 Monaco Owner's Forum 4 01-11-2011 09:38 PM
CAN I INCREASE SIZE OF MY WATER HEATER? OpaRon RV Systems & Appliances 5 11-03-2007 01:39 AM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:55 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×