There have been numerous threads on the maximum distance achieved on a tank full of diesel.
The only way one can prove maximum mileage on a full tank of diesel is to run the tank dray, or very nearly dry.
The tank is a fixed, and standard size, so claimed maximum range is not very informative, what is useful is MPG, and that is better calculated from brimmed tank to brimmed tank, than from brimmed tank to almost empty.
D3s & D4s have of course fuel filters, but am I correct in thinking it's still not very wise to run the tank bone dry?
NJSSAm I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
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1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
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17th Apr 2014 5:01 pm
Rush
Member Since: 16 Mar 2013
Location: Didcot
Posts: 110
You are correct in thinking it's not a wise move to run your tank until it's dry.. You'd be suprised at the ammount of crap in the depths of your fuel tank.
You are certainly keen to get your exact tank range if you're considering it Discovery 2007 XS
Fiat Coupe 1997 20VT
VW Scirocco 2.0 TDi
Thanks Rush - there's no way I would consider it...
NJSSAm I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t.
17th Apr 2014 5:15 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
If the car is otherwise serviceable you can indeed run it until it stops.
The designers did think about possible crud in the tank and the possibility of running dry. The pump circulates the entire contents to the engine and back every hour (minus the small bit you burn) and the fuel does the whole coarse filter to jet-assisted swirl pot thing before heading to the fine filter. When you perceive the car running out of fuel the D3 is just faking it and is actually hiding 4 litres in the system to avoid any damage.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 08 Jun 2010
Location: cotswolds
Posts: 1482
People seem to forget that the fuel always comes from the bottom of the tank
Andi.
17th Apr 2014 9:03 pm
A.J.M
Member Since: 31 Oct 2009
Location: Carluke
Posts: 2821
I run mine out of diesel a few months ago, I was aiming for a fuel station 1/2 mile further up the road.
I had 5 miles range and it cut out on a roundabout. Filled with diesel and bled the system and it's been fine.
My best has been 511 miles on one tank.
17th Apr 2014 9:23 pm
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20778
After covering 130 miles, my range was displaying a further 570 miles remaining
Member Since: 25 Aug 2009
Location: Are you sure this is the M5 ?
Posts: 1498
I bet it didn't manage 700 miles to empty though
I've had well over 350 miles showing at above half tank on the gauge, but for some reason known only to the LR design engineers it would seem the 2nd 'half' is somewhat less that the 1st 'half' Never get mad - get even !!
06 D3 now gone to family member and still going strong at 265k
previous vehicles:
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17th Apr 2014 9:44 pm
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20778
No, it had too much fun being flung around the countryside of Aberdeenshire this afternoon. Has dropped to a theoretical range of 580 nowMy D3 Build Thread
Member Since: 03 Apr 2014
Location: INSCH
Posts: 14
RUNNING DRY ETC
Once, I filled my D2 tank with 50 litres of petrol. I had two ladies in the back of the car and they were both talking at me at the same time so I claim utter distraction with a small tinge of idiocy. To the local garage on back of recovery truck to be met by Jock the smiling proprietor who awarded me his numpty of the week prize. Once pumped out and refilled with diesel that D2 went better that when it was new...well nearly. I assumed that the tank, after a lot of miles, was contaminated with water and sundry cruddy elements and washing it out with petrol had actually done some good.
However, I do not recommend this as a normal part of the service schedule.
...At that point, the trip was averaging 33.9 mpg...
The trip computer has a long pointy wooden nose...maybe its made in ItlayBREXIT - done properly.
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20th Apr 2014 9:58 am
Dave^
Member Since: 23 Jun 2013
Location: West Yorks
Posts: 706
My usual “distance driven“ + “distance left“ usually add up to just over 500miles...
That is of course, 'til you get down to the last 100miles, which tends to fluctuate between sod all and enought to get home...
I swear I can head occasional giggling coming from behind the dash at this point... flickr
20th Apr 2014 10:18 am
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20778
The trip in my D3 is one of the most accurate I have had in ANY car
Usually optimistic by 0.1-0.2mpg
Dave^ wrote:
That is of course, 'til you get down to the last 100miles, which tends to fluctuate between sod all and enought to get home...
I swear I can head occasional giggling coming from behind the dash at this point...
Left Aberdeen on Friday with a "range" of 106 miles. Got 45 miles down the road, and had to fill up, wit ha range of 2 miles My D3 Build Thread
Member Since: 23 Jun 2013
Location: West Yorks
Posts: 706
Glad it's not just me...
Although I do like to play “Fuel light lottery“, as a detest trips to the station, I like to do it as little as possible.flickr
20th Apr 2014 10:29 am
Shepherd
Member Since: 06 Feb 2013
Location: Dundee
Posts: 12
That's what happened to me ( that time I contacted you from Coupar angus Rd / Kingsway).
Left Dundee 88 miles Range .thought I would fill up back in Dundee. Ran out at above position. As you will know that's only about 40 miles. So don't think I will trust trip for a while.Newbie to disco have just acquired one(wanted one for years)
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You'd be suprised at the ammount of crap in the depths of your fuel tank.
