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Not bad MPG for a V8
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Mogwyth
 


Member Since: 03 Oct 2014
Location: Pwllheli
Posts: 2939

Wales 2005 Discovery 3 4.4 V8 HSE Auto Zambezi SilverDiscovery 3
Not bad MPG for a V8

70mph down the motorway hovered around this number all the way, real numbers just over 20.


Best figures I have seen, can only put it down to cleaned throttle body, new pcv valve and a couple of replacement coils, even on the rural roads coming back it was still showing around 19.
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05 D3 HSE V8 4.4 LPG
 


Last edited by Mogwyth on 29th Apr 2017 7:37 pm. Edited 1 time in total 
Post #180940129th Apr 2017 7:12 pm
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MorganD379
 


Member Since: 29 Sep 2016
Location: sa623pp
Posts: 94

Wales 2008 Discovery 3 TDV6 XS Auto Santorini BlackDiscovery 3

I'd be happy with that... My beloved pathfinder wouldn't get that if I pushed it down the road.
  
Post #180941029th Apr 2017 7:36 pm
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pjm-84
 


Member Since: 04 Oct 2016
Location: Hampshire
Posts: 345

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Zambezi SilverDiscovery 3

Welcome to the 20mpg + V8 world.
  
Post #180942529th Apr 2017 8:35 pm
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toolbox 28
 


Member Since: 27 Nov 2016
Location: lechlade, glos
Posts: 117

United Kingdom 2005 Discovery 3 4.4 V8 SE Auto Zambezi SilverDiscovery 3

cleaning the throttle body made a big difference to mine but haven't done the pcv, should I?
 54 disco 3 4.4 v8
06 freelander hse now gone
98 disco 2td5 now working on the farm 
 
Post #180950930th Apr 2017 8:06 am
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Charliecloud
 


Member Since: 31 Jul 2014
Location: Tonbridge
Posts: 324

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Bonatti GreyDiscovery 3

The PCV is the only real achilles heal of the V8 apparently. Takes 15 mins tops to replace, 2 x 25 torx screws and remove 1 hose.
As all V8 are coming up to 12 years old it's worth doing.
Duckworths amongst others can supply them.
  
Post #180952430th Apr 2017 9:10 am
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SafariDave
 


Member Since: 19 Nov 2011
Location: NYC & LA
Posts: 461

United States 2005 Discovery 3 4.4 V8 SE Auto Bonatti GreyDiscovery 3

Those mpg numbers are what we usually hit on both of our D3 V8's. Pvc are the only thing I have not done.
Dave
 LR3 2005 V8 SE Bonatti Grey "The Rhino"
De-tangoed Headlights, LR4 14-16 Style Grille, LR4 19" Wheels/ Bridgestone Alenza 
 
Post #180960830th Apr 2017 2:15 pm
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Mogwyth
 


Member Since: 03 Oct 2014
Location: Pwllheli
Posts: 2939

Wales 2005 Discovery 3 4.4 V8 HSE Auto Zambezi SilverDiscovery 3

Your gallon is smaller Razz

Quote:
One imperial gallon is equivalent to approximately 1.2 U.S. liquid gallons


So your mpg should on average be higher.

Its also recommended to clean the pcv pipes as well.
 ==================================
05 D3 HSE V8 4.4 LPG
 
 
Post #180961430th Apr 2017 2:40 pm
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pjm-84
 


Member Since: 04 Oct 2016
Location: Hampshire
Posts: 345

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Zambezi SilverDiscovery 3

Well I visited Wales at the weekend to see old man PJM and tinker with the V8.

Changed the oil and filter so squeezed 5500 miles since the purchase change. Note the 7.7litre refill requirement. Changed the bottom oil sensors as a precautionary measure whilst doing the oil change.

Went for a genuine filter and Castrol Magnatec oil.

22.4 mpg on the computer for the journey up but a whopping 26.7mpg on the computer for the return journey Bow down Best ever "computer figure" and I'm running on ATRs, with a snorkel and now an RLD sump plate

Does the V8 like new oil, or particularly like Castrol? Or has the sump plate improved the aerodynamics!
  
Post #184772715th Aug 2017 10:48 pm
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Ja92mie
 


Member Since: 16 Sep 2014
Location: Newquay
Posts: 906

United Kingdom 2005 Discovery 3 TDV6 SE Manual Java BlackDiscovery 3

Just got back from the states I had a Dodge Ram 1500 5.7 hemi, best I got out of it was 15.6mpg on a run, daily driving I got 12mpg Laughing

Loved it though! Loved the V8!
  
Post #184779816th Aug 2017 9:28 am
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