Notices
GT S197 General Discussion This section is for technical discussions pertaining specifically to the V8 variation of the 2005 and newer Ford Mustang.

What is "True" Petrol Empty?

Old 11-17-2008, 03:00 PM
  #11  
Kotobuki
3rd Gear Member
 
Kotobuki's Avatar
 
Join Date: Apr 2008
Location: Texas
Posts: 671
Default

I'm not entirely sure when it comes on... Seems like around 3 or 4 miles to "empty", though it could be related to ACTUAL remaining tank capacity as the last time I took it to under 5 miles to E it didn't come on, the entire fuel gauge turns a nice dark red. Like, the same color as the E marking on it. I don't recall how much I put in then, but if I take it that low again, I'll be sure to pay attention. I drive rather erratically, so it's hard to get a real good reading of how far a tank will stretch.
Kotobuki is offline  
Old 11-17-2008, 03:45 PM
  #12  
Riptide
6th Gear Member
 
Riptide's Avatar
 
Join Date: Nov 2007
Location: Montaner
Posts: 6,193
Default

I have a question about that. My display read 4 miles to E yesterday right before I went to fill up. However the lettering did not turn red. Is it some other part of the display that is supposed to do that?
Riptide is offline  
Old 11-17-2008, 06:04 PM
  #13  
AmericanSpeed
5th Gear Member
 
AmericanSpeed's Avatar
 
Join Date: Mar 2007
Location: Orlando, FL
Posts: 2,031
Default

I'm pretty sure you have to have the display lit up to see the gauge turn red (i.e. when driving lights are on).
AmericanSpeed is offline  
Old 11-17-2008, 08:56 PM
  #14  
Burnsy
5th Gear Member
 
Burnsy's Avatar
 
Join Date: Mar 2007
Location: CT
Posts: 2,209
Default

My computer has been very accurate for what that's worth. But yeah, running on low does not sit well with the fuel pumps.
Burnsy is offline  
Old 11-18-2008, 12:53 AM
  #15  
Stoenr
5th Gear Member
 
Stoenr's Avatar
 
Join Date: May 2005
Location: S.burbs Chicago
Posts: 4,793
Default

Getting is all out for the 93 tune, lol.



http://home.comcast.net/~tribalwar/162.jpg



http://home.comcast.net/~tribalwar/162.jpg

Stoenr is offline  
Old 11-24-2008, 01:56 PM
  #16  
algregory
3rd Gear Member
Thread Starter
 
algregory's Avatar
 
Join Date: Jan 2005
Location: New Bern, NC
Posts: 701
Default

Yours is by far the best reply! True, I shouldn't have been running around in NC in the dark without gas, but, sometimes.... Meanwhile, my computer appears to be pretty accurate, normaly when I fill it up and check the "Gallons Used" they are really, really close, unless I forget to reset that function PDQ when I get gas.

If you take your 16.226 gallons that you put in, compare it to my 15.44 gallons and to my approximate "14 Miles to Empty" and to my 2008 YTD Average MPG of 19.97 and make the calculations, we find that my system was less than a mile off to being out of gas. Of course, being stuck with a 3,700 pound car in really dark backroads NC, and flat, even with the gas station in site, would really be a drag. My wife has said she WILL NOT help me push!
algregory is offline  
Old 11-24-2008, 03:44 PM
  #17  
Stoenr
5th Gear Member
 
Stoenr's Avatar
 
Join Date: May 2005
Location: S.burbs Chicago
Posts: 4,793
Default

Lol, yeah, I have been told, dont call me! But I usually fill up once the 50 miles to empty comes on for the most part.
Stoenr is offline  
Old 11-24-2008, 04:22 PM
  #18  
157dB
Cut & Paste Expert
 
157dB's Avatar
 
Join Date: May 2007
Location: NW Arkansas
Posts: 13,322
Default

The fuel guage shows 1 gallon (E) to 16 gallons (F).
The low fuel comes on at 10% left on the fuel guage.
15 gal x 10% = 1.5 gallons left when the warning light comes on
plus the 1 gallon that does not register on the guage.
So when the low fuel lamp comes on, you have 2.5 gallons left.
When my dashhawk shows 0% fuel left, it takes 15+ gallons
to make it read 100% full.
157dB is offline  
Old 11-24-2008, 04:41 PM
  #19  
Stoenr
5th Gear Member
 
Stoenr's Avatar
 
Join Date: May 2005
Location: S.burbs Chicago
Posts: 4,793
Default

Originally Posted by 157db
The fuel guage shows 1 gallon (E) to 16 gallons (F).
The low fuel comes on at 10% left on the fuel guage.
15 gal x 10% = 1.5 gallons left when the warning light comes on
plus the 1 gallon that does not register on the guage.
So when the low fuel lamp comes on, you have 2.5 gallons left.
When my dashhawk shows 0% fuel left, it takes 15+ gallons
to make it read 100% full.

Not necessarily. It basis miles to empty from your avg mpg. Ive had the 50 miles to empty come on at 1/4 tank, and at 1/8 tank.
Stoenr is offline  
Old 11-24-2008, 04:48 PM
  #20  
orange04s281
2nd Gear Member
 
orange04s281's Avatar
 
Join Date: Sep 2007
Posts: 192
Default

at 0 miles to empty you should have about 15 miles lift to go(aprox. 1 gal.) Dont worry about sucking dirt from the bottom of your tank because the pump always gets the fuel from the bottom.
orange04s281 is offline  

Thread Tools
Search this Thread
Quick Reply: What is "True" Petrol Empty?



All times are GMT -5. The time now is 01:45 AM.