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 11-07-2007, 06:45 AM   #1
Winnie-Wise
 
SargeW's Avatar
 
Join Date: Sep 2002
Location: Fallbrook, Ca
Posts: 307
I just turned 15K on the clock returning from a trip to Pahrump, NV. The rig is running great, and I have noticed a significant increase in power and MPG as of late. I do know that a new diesel has a break in period that can be lengthy compared to gas motors. The average diesel is so tight when new that it takes a while for parts to seat and move a little easier.

On the last trip we traveled a bit over 500 miles. Most of which the cruise was set at 60 MPH and the Jeep was in tow. We traveled some decent grades going up I15 towards Vegas and I let the cruise and the Allison work together to pull us up the grades. When I returned home we had averaged approx. 9.5 MPG for the trip. I am pretty happy with that number, as my Dodge Dually with the 5ver hooked up had a hard time getting over 8 MPG.

I constantly monitor the engine and tranny temps with the VMSpc software, and they are remarkably low. Even going up Cajon pass on the 15 fwy I pulled the grade at 55mph in fourth gear. The Allison never got above 186 degrees, and the coolant held steady at 199 degrees. Remarkable considering that on the flat the coolant was sitting at 195 degrees. That was with an outside temp of 87 degrees.

My fantasy is if I can hit the magic 10 MPG mark while towing the Jeep. Hey, it's good to have dreams

Sarge
__________________
Marty and Diane, Fulltiming!

Our Travel Blog www.mytripjournal.com/rvnchickalaska
SargeW is offline   Reply With Quote
Old 11-07-2007, 06:45 AM   #2
Winnie-Wise
 
SargeW's Avatar
 
Join Date: Sep 2002
Location: Fallbrook, Ca
Posts: 307
I just turned 15K on the clock returning from a trip to Pahrump, NV. The rig is running great, and I have noticed a significant increase in power and MPG as of late. I do know that a new diesel has a break in period that can be lengthy compared to gas motors. The average diesel is so tight when new that it takes a while for parts to seat and move a little easier.

On the last trip we traveled a bit over 500 miles. Most of which the cruise was set at 60 MPH and the Jeep was in tow. We traveled some decent grades going up I15 towards Vegas and I let the cruise and the Allison work together to pull us up the grades. When I returned home we had averaged approx. 9.5 MPG for the trip. I am pretty happy with that number, as my Dodge Dually with the 5ver hooked up had a hard time getting over 8 MPG.

I constantly monitor the engine and tranny temps with the VMSpc software, and they are remarkably low. Even going up Cajon pass on the 15 fwy I pulled the grade at 55mph in fourth gear. The Allison never got above 186 degrees, and the coolant held steady at 199 degrees. Remarkable considering that on the flat the coolant was sitting at 195 degrees. That was with an outside temp of 87 degrees.

My fantasy is if I can hit the magic 10 MPG mark while towing the Jeep. Hey, it's good to have dreams

Sarge
__________________
Marty and Diane, Fulltiming!

Our Travel Blog www.mytripjournal.com/rvnchickalaska
SargeW is offline   Reply With Quote
Old 11-07-2007, 08:51 AM   #3
Winnebago Master
 
John_Canfield's Avatar
 
Join Date: Jan 2005
Location: Back at the ranch
Posts: 2,041
Good report, Sarge. I really love my VMSpc, especially the tank-minder and the configurable odometers.

On our way home from our recent trip (and with a new radiator fan motor/pump), we pulled some pretty good grades and the coolant temp never went above 205 even though our engine RPMs were ~1800. The outside air temp was 80, so it will be interesting to see what happens we pull grades in the summer heat.

I think our coach mileage has improved at least 0.5 MPG now that we have about 32,000 miles on it.

Our Jeep Liberty CRD (diesel) only got about 18 MPG (or thereabouts) when new, now we average about 23 MPH (highway.)
__________________
--John

2005 Horizon 40AD, 2005 Jeep Liberty CRD
John_Canfield is offline   Reply With Quote
Old 11-07-2007, 09:38 AM   #4
Winnebago Owner
 
Join Date: Oct 2007
Posts: 193
John you said your mileage increaed .5 to what is the .5 you added it to?
__________________
2008 Winnebago Vectra 40TD

1999-2008 traded in Suncruiser 90,000 miles
Jeeperrmartin is offline   Reply With Quote
Old 11-07-2007, 12:44 PM   #5
Winnie-Wise
 
SargeW's Avatar
 
Join Date: Sep 2002
Location: Fallbrook, Ca
Posts: 307
John, I am envious of your diesel Liberty! I wish that Jeep would come out with a diesel Wrangler. In a 4WD magazine that I subscribe to, they are building a project Wrangler in the new 4 door with a Cummins ISB in it. That would be a little excessive for my needs!
__________________
Marty and Diane, Fulltiming!

Our Travel Blog www.mytripjournal.com/rvnchickalaska
SargeW is offline   Reply With Quote
Old 11-07-2007, 02:05 PM   #6
Winnebago Master
 
John_Canfield's Avatar
 
Join Date: Jan 2005
Location: Back at the ranch
Posts: 2,041
Jeeperrmartin - this summer we put 8500 miles on the coach and we averaged 7.7 MPG. When the coach was new, the best we could average was around 7.2.

Sarge - the Liberty's engine is okay, not great, but okay. Unfortunately it isn't a Mercedes diesel but an Italian one from a company that was (is) owned by DC. The torque curve isn't very linear - the engine doesn't develop adequate power until it is ~1500 RPM. If I need to make a "hole shot" to zip across traffic, the left foot goes on the brake and the right foot is on the throttle. Darn near killed myself when the Jeep was new and I floored the throttle to shoot across a four-lane highway. Not much happened in the "go" department. I was used to my F-250 diesel pickup - you floor the throttle and you get pushed back in your seat right then and there.
__________________
--John

2005 Horizon 40AD, 2005 Jeep Liberty CRD
John_Canfield is offline   Reply With Quote
Old 11-08-2007, 05:12 AM   #7
Winnie-Wise
 
SargeW's Avatar
 
Join Date: Sep 2002
Location: Fallbrook, Ca
Posts: 307
Good info John, thanks. Maybe someone will make a "chip" for the Liberty. They do for everythng else!
__________________
Marty and Diane, Fulltiming!

Our Travel Blog www.mytripjournal.com/rvnchickalaska
SargeW 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
is it a 16,000 or 18,000 pound chassis? emcee Winnebago Class A Motorhomes 13 04-04-2014 08:34 AM
3,000 Mile Oil Change Myth Patrol 65 General Maintenance and Repair 22 03-05-2013 07:30 PM
Upgrade from 8,000-10,000 watt Generator Traps90 Electrical | Charging, Solar and Electronics 6 03-06-2011 10:25 PM
Mile per gallon.....400 Cummins rebelsbeach Winnebago General Discussions 14 01-25-2006 02:07 AM

» 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 09:13 AM.


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