Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 10-15-2012, 06:24 PM
Member
My Jeep: 2011 5.7L WK2
 
Join Date: Aug 2012
Location: Keswick Ontario Canada
Posts: 80
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 798
covet66 is on a distinguished road
Fuel Tank reserve....

So i believe my 07 GC OVerland has a 21.5 gallon tank = 82 litres. When my gauge shows empty, and my dash says zero kms to empty, I can only put about 62 to 64 litres of fuel in my tank. Is the remaining 20 or so litres actually reserve fuel? Seems like a lot if so...
__________________

__________________
Reply With Quote
  #2  
Old 10-15-2012, 06:27 PM
SvenskaJeepGuy's Avatar
Let's Roll
My Jeep: 2005 4.7L WK
 
Join Date: Dec 2009
Location: Scranton PA
Posts: 13,083
Thanks: 139
Thanked 162 Times in 152 Posts
Rep Power: 1255316
SvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond repute
Garage
Re: Fuel Tank reserve....

mine seems to have a 3 gallon reserve.
__________________

__________________
Reply With Quote
  #3  
Old 10-15-2012, 07:52 PM
Member
My Jeep: 2011 5.7L WK2
 
Join Date: Aug 2012
Location: Keswick Ontario Canada
Posts: 80
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 798
covet66 is on a distinguished road
Re: Fuel Tank reserve....

Thats about 11.5 litres, still seems there is more in my reserve. Guess the only way to know for sure is to run her dry...
__________________
Reply With Quote
  #4  
Old 10-15-2012, 07:56 PM
SvenskaJeepGuy's Avatar
Let's Roll
My Jeep: 2005 4.7L WK
 
Join Date: Dec 2009
Location: Scranton PA
Posts: 13,083
Thanks: 139
Thanked 162 Times in 152 Posts
Rep Power: 1255316
SvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond reputeSvenskaJeepGuy has a reputation beyond repute
Garage
Re: Fuel Tank reserve....

that can badly damage the fuel pump so i just follow the gauge lol
__________________
Reply With Quote
  #5  
Old 10-15-2012, 08:04 PM
bill_de's Avatar
Premium Member
My Jeep: 2014 5.7L WK2
 
Join Date: Sep 2012
Posts: 5,873
Thanks: 297
Thanked 300 Times in 265 Posts
Rep Power: 1801297
bill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond repute
Re: Fuel Tank reserve....

I don't usually let my tank get too low. But it would be nice if manufacturers would list the 'reserve' amount as part of the specs.
__________________
Reply With Quote
  #6  
Old 10-15-2012, 09:43 PM
viking757's Avatar
Member
My Jeep: 2008 6.1L SRT8
 
Join Date: May 2010
Location: NOVA
Posts: 792
Thanks: 0
Thanked 23 Times in 23 Posts
Rep Power: 19864
viking757 has a reputation beyond reputeviking757 has a reputation beyond reputeviking757 has a reputation beyond reputeviking757 has a reputation beyond reputeviking757 has a reputation beyond reputeviking757 has a reputation beyond reputeviking757 has a reputation beyond reputeviking757 has a reputation beyond reputeviking757 has a reputation beyond reputeviking757 has a reputation beyond reputeviking757 has a reputation beyond repute
Garage
Re: Fuel Tank reserve....

Its my understanding Jeep leaves an extra ~3 gallons to keep the fuel pump cool and because people like me wait to get gas until the light turns on. Rather than run it dry if you are really curious pump it out into a container and measure it.
__________________
Reply With Quote
  #7  
Old 10-16-2012, 03:40 AM
Member
My Jeep: 2011 5.7L WK2
 
Join Date: Aug 2012
Location: Keswick Ontario Canada
Posts: 80
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 798
covet66 is on a distinguished road
Re: Fuel Tank reserve....

Yep, I know that fuel keeps the pump cool- wasn't going to run her too low. I hate to see the tank get past halfway, but I have been getting around 400 kms a tank but if a tank for me is essentially just 62 litres then I guess that is about right.
__________________
Reply With Quote
  #8  
Old 10-16-2012, 11:12 AM
Blackout's Avatar
Member
My Jeep: 2006 4.7L WK
 
Join Date: Jun 2012
Location: Indiana
Posts: 67
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 827
Blackout is on a distinguished road
Re: Fuel Tank reserve....

Other day driving home from school, my light came on about 15 miles from home, then I drove into town on top of that to fill up (another 9 miles) and still could only get about 18 gallons in there. So it's got to be ~3 gallons
__________________
Reply With Quote
  #9  
Old 10-19-2012, 12:48 PM
Member
My Jeep: 2008 5.7L WK
 
Join Date: Jan 2010
Location: mid-Michigan
Posts: 448
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 2135
Walt has a reputation beyond reputeWalt has a reputation beyond repute
Re: Fuel Tank reserve....

Quote:
Originally Posted by covet66 View Post
So i believe my 07 GC OVerland has a 21.5 gallon tank = 82 litres. When my gauge shows empty, and my dash says zero kms to empty, I can only put about 62 to 64 litres of fuel in my tank. Is the remaining 20 or so litres actually reserve fuel? Seems like a lot if so...
'08 FSM says low level alarm is set at 11% capacity. Because the tank is flat on bottom, much if that volume is likely not usable.

My experience is that there is somewhat more fuel than that left in the tank at the alarm point.
__________________
'08 WK Limited, 5.7L HEMI, Quadra-Trac II, Bright Silver Metallic, Class IV Hitch, Michelin LTX M/S tires, Billet Technology oil catch can, Fumoto oil drain valve.
Reply With Quote
  #10  
Old 10-25-2012, 02:37 AM
coffaqcof's Avatar
Member
 
Join Date: Oct 2009
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1767
coffaqcof is on a distinguished road
Re: Fuel Tank reserve....

The 3 gallon 'safety' mark is correct. I was always curious why the max I had pumped into the tank was 19.2, even though the capacity was rated at 21.1 gallons. After an off-roading incident dented the original tank pretty badly I had to replace it, and was able to prove to myself the tank's actual capacity. It really is just over 21 gallons from bone dry.

The really cool thing they managed to do was manipulate the fuel guage to accomodate this reserve. My guage is spot on for the top 3/4's. If it sits at half a tank, I will fit right about 10.5 gallons in, and at 1/4 tank it will take just over 15.5 gallons. The reserve is all accounted for in the bottom 1/4 on the guage. If you watch it on long drives you can actually see that the last 1/4 tank drops way faster than the top 3/4's. I ignore the light, and just use the guage. When it stops moving when I make turns or change speeds quickly, that's when I stop for fuel. At that point, I usually get about 19 gallons in.
__________________

__________________
Dude # 7045
Global Warmer
2nd Gen Jeeper
95 ZJ Ltd Blk sold @180K
99 WJ Lar Red sold @150K
08 WK Overland 5.7 Black - LOADED,RR 2.25"F, OME 3"R,K&N 63,4XGuard Rear,Belly,Sliders, Matrix, 255/75/17 BFG MT KM's, V-Tec Whls, Flashpaq, V1
WILL drive to DEATH
POWER TO THE MEOPLE! DEATH TO THE SHEEPLE!
[SIGPIC][/SIGPIC]
Reply With Quote
Reply

Thread Tools
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
Auixiliary fuel tank for WK2 savvas Export Grand Cherokee 2011+ 38 09-08-2012 02:46 AM
Noise from Fuel tank swarmer Diesel Powered WK Grand Cherokee 1 07-03-2012 03:04 PM
First Tank of Gas /Fuel Efficiency Play21cw Grand Cherokee - WK2 - 10 01-20-2012 04:43 PM
problems filling fuel tank ferd Troubleshooting/Problems 3 06-29-2011 09:20 PM
getting the new fuel tank installed tomorrow compscirunner Grand Cherokee - WK2 - 4 03-29-2011 01:34 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 09:48 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community