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Chicken Drumstick



Member Since: 17 Aug 2020
Location: Near MK
Posts: 707
United Kingdom 
Re: Efficiency improvements and miles to a tank 2.4 90
TXH90 wrote:
Hi All,

I've been playing around with driving style and driving more conservatively in a bid to improve my miles in a full tank. The maximum I manage before the light comes on is 330 and the maximum i've driven to is 350 and it got me thinking. What sort of milage should I be getting or what are other's getting i'm intrigued. Running 235 BFG AT's which I'm guessing can't help rolling resistance?!

Also, in the same vein what are some of the best performance modifications/efficiency upgrades people have gone for that they have found actually work? I have a stage 1 remap but the way diesel is going Big Cry I may have to go to extreme measures

Laughing


Narrow tyres will give less drag and resistance and better mpg as a rule.

The Puma's are not that great on fuel. We have a number of 90's on the farm. The most frugal are the Tdi's....

And a 4.4 TDV8 RR averages better mpg than any of the Puma's.
Post #948990 11th Apr 2022 10:15am
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kenzle8a



Member Since: 12 Feb 2020
Location: None
Posts: 1074
 
AMBxx wrote:
550 miles? Was that with a 2nd fuel tank?
Td5 had a 13.2 gallon tank. You'd have to get close to 42 mpg to do 550 miles. Official mpg was 28, though 30 wasn't hard to get.


Driving round Mull, very little stopping on most of the roads as it wasn't peak season / max speed of 40 mph average.

I usually average 250 miles to half a tank during normal driving a usual day is smaller farm roads and a motorway run at 60 mph, once a month I tow our horse trailer which is about 3 tonnes loaded for about 60 miles.

99% of the time I re-fill on 1/2 a tank so keep a note of the amount used, old habit for racing as we used to weigh the fuel in some of the race cars. But I just keep a running average of the litres used per 1/2 tank to check for any fuel leaks and running issues.
Post #948992 11th Apr 2022 10:34am
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TXH90



Member Since: 19 Jul 2020
Location: Worcs.
Posts: 54
United Kingdom 2007 Defender 90 Puma 2.4 HT Tamar Blue
Some great responses; I'm in bits at the ranges some people are managing to get Neutral Big Cry Mantra is now 50-60 and only 70-80 for a little treat Laughing

Just got rid of my irksome VW Golf to scrapman so now have some more in the diesel fund I suppose. Or should that be repair fund Rolling with laughter
Post #949034 11th Apr 2022 4:24pm
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Mike c



Member Since: 11 Aug 2017
Location: Maldon, Essex
Posts: 925
England 2004 Defender 90 Td5 CSW Belize Green
Standard td5 90 csw running michelin latitude Cross in standard size, usually 28 to 30 locally winter, summer this is more like 30 to 33mpg, slightly more on longer summer holiday trips with local trips included. 2004 Defender 90 Td5 CSW
2002 Discovery 2 td5 GS (gone)
1994 Defender 90 300Tdi CSW (gone)
Post #949045 11th Apr 2022 5:48pm
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SJM2018



Member Since: 06 Jul 2018
Location: Bristol
Posts: 296
United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Aintree Green
The best I have ever managed is 375 miles to a tank (2.4 90) - 34 mpg.

This was a return trip from Bristol to Kent and I spent most of my time sat behind lorrys. 2011 CSW XS 90
Post #949056 11th Apr 2022 7:45pm
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kenzle8a



Member Since: 12 Feb 2020
Location: None
Posts: 1074
 
It’s still depressing when my wife’s car weighs more than my TD5 110 yet also gets nearly double the mpg (Octavia 4x4)
Post #949072 11th Apr 2022 8:56pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6295
England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
SJM2018 wrote:
The best I have ever managed is 375 miles to a tank (2.4 90) - 34 mpg.

This was a return trip from Bristol to Kent and I spent most of my time sat behind lorrys.



them lorries must have been going too fast Rolling with laughter

look out for the tall ones restricted to 50mph Thumbs Up Mr. Green
Post #949160 12th Apr 2022 2:56pm
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TXH90



Member Since: 19 Jul 2020
Location: Worcs.
Posts: 54
United Kingdom 2007 Defender 90 Puma 2.4 HT Tamar Blue
Well this post makes me feel a little better- at least I know I'm getting something inline with other 90s. Going to go steady on the accelerator when I can Whistle

X4SKP wrote:
Hello TXH90

My 90 typically returns around 26-30+mpg the key difference delivering this is type of journey
and (probably more importantly) driving style... Shocked

Every day 'mix' = 26mpg
Motorway at 50-60mph (6th gear all day long) =30+mpg
(went to Wales last weekend achieving 34mpg for the round Trip)
Motorway at 70mph = 24mpg
Towing (1200kgs unladen-laden 1800kgs) Caravan = 22-26mpg
(have managed 28mpg Towing + Roof Rack + Top Box)

So the Range in the 90 is 300-350 with around 300 being typically when I head to the Pumps
putting 40-45lts in.

The 90 is running on Cooper Zeon 275 60R20's

We are in the market currently for a 110 and amongst other things the larger capacity Fuel Tank / Range is a factor, our last two trips from the South to the North we manged in the 90 without using any Motorway Services to Fill Up... carrying a 20lt Jerry Can gives us a 100mile safety factor.


Click image to enlarge



For what the Defender is I don't think it's too bad...
Post #949167 12th Apr 2022 3:42pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3639
United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
feathering the throttle and keeping below 1800 rpm in a puma can achieve really good mpg, go over 50 mph and it drops off significantly, remember that the throttle in high range gives 100% throttle over much less than 100 of the travel. (memory says 25% but expect someone will correct me)

I have found that moving from standard 235 continentals on 16 inch boost to 256 BFG AT2 on 18 inch bowler wheels has dropped my mpg 10-15% approx will experiment with higher tyre pressures DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #949183 12th Apr 2022 5:15pm
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TXH90



Member Since: 19 Jul 2020
Location: Worcs.
Posts: 54
United Kingdom 2007 Defender 90 Puma 2.4 HT Tamar Blue
What pressures do you run your BFs on?
Post #949184 12th Apr 2022 5:19pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3639
United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
currently 34 front and rear DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #949187 12th Apr 2022 5:52pm
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Likeomg



Member Since: 29 Jun 2012
Location: Lake District / Newcastle
Posts: 2637
2010 Defender 90 Puma 2.4 HT Stornoway Grey
i get 260-270 miles per tank on a 2.4 90.

Roof rack, 285/65/18 cooper zeon's

hybrid turbo, ic exhaust etc..
Post #949211 12th Apr 2022 8:40pm
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robbie9999



Member Since: 07 Jun 2023
Location: Toronto
Posts: 17
Canada 2008 Defender 110 Puma 2.4 PU Keswick Green
One Tank Distance
Stock 2008 Defender minus tires, running 31.5

Just drove to the 75th Jubilee in upstate New York, as per picture, I got a total of 712.3km= 442 miles.
I kept it at 120km averge speed, could have easily got 725km, but got worried.

Questions

1. Once the light comes on and needle is at empty, how much of a reserve is left ?

2. I am about to do a Stage 1 re-map anyone notice a differance in milage and or power ?


Click image to enlarge


Click image to enlarge


Click image to enlarge
Post #997075 22nd Jun 2023 2:06am
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3639
United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
I have had an IRB remap for several years.

Ian knows I tow a caravan and promised me loads of torque.

I've noticed its loads smoother and extremely torquey, I can pull 6th gear at 50-55mph with the caravan and accelerate without changing down.

1st gear has also become redundant when not towing unless on a hill, I love it and it has not noticeably affected MPG, if anything its slightly better when driven in the 1500-2000 rpm torque range.

Like others in mine high RPMs and speed kills MPG. DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #997088 22nd Jun 2023 7:26am
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steveww



Member Since: 05 Jan 2022
Location: Uppingham
Posts: 566
United Kingdom 2015 Defender 110 Puma 2.2 XS CSW Bronze Green
In my 110 SW with 265x65x18 BFG:

Day to day mixed 27mpg
Long steady run 32mpg
Fully loaded with roof tent 25mpg
Post #997104 22nd Jun 2023 9:21am
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