Member Since: 03 Oct 2014
Location: Pwllheli
Posts: 3976
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.==================================
05 D3 HSE V8 4.4
04 MG TF 135
03 MG TF 115 Cool Blue Edition
02 MG TF 160
00 Hymer B564 Lionheart
1971 Series III 109
Last edited by Mogwyth on 29th Apr 2017 7:37 pm. Edited 1 time in total
29th Apr 2017 7:12 pm
MorganD379
Member Since: 29 Sep 2016
Location: SA62 3PP
Posts: 425
I'd be happy with that... My beloved pathfinder wouldn't get that if I pushed it down the road.
29th Apr 2017 7:36 pm
pjm-84
Member Since: 04 Oct 2016
Location: Hampshire
Posts: 2608
Welcome to the 20mpg + V8 world.
29th Apr 2017 8:35 pm
toolbox 28
Member Since: 27 Nov 2016
Location: lechlade, glos
Posts: 123
cleaning the throttle body made a big difference to mine but haven't done the pcv, should I?54 disco 3 4.4 v8 now gone
06 freelander hse now gone
98 disco 2td5 now working on the farm
30th Apr 2017 8:06 am
Charliecloud
Member Since: 31 Jul 2014
Location: Tonbridge
Posts: 980
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.
30th Apr 2017 9:10 am
SafariDave
Member Since: 19 Nov 2011
Location: NYC & LA
Posts: 775
Those mpg numbers are what we usually hit on both of our D3 V8's. Pvc are the only thing I have not done.
DaveD3 2005 V8 SE Bonatti Grey "The Rhino" (our NYC D3)
De-tangoed Headlights, D4 2016 Style Black Pack Grille, D4 19" Wheels/ Bridgestone Alenza
D3 2005 V8 SE Bonatti Grey, D4 2016 Style Black Pack Grille (our LA D3)
D2 1999 V8 SD7 Chawton White (our Caribbean Beach truck)
30th Apr 2017 2:15 pm
Mogwyth
Member Since: 03 Oct 2014
Location: Pwllheli
Posts: 3976
Your gallon is smaller
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
04 MG TF 135
03 MG TF 115 Cool Blue Edition
02 MG TF 160
00 Hymer B564 Lionheart
1971 Series III 109
30th Apr 2017 2:40 pm
pjm-84
Member Since: 04 Oct 2016
Location: Hampshire
Posts: 2608
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 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!
15th Aug 2017 10:48 pm
Ja92mie
Member Since: 16 Sep 2014
Location: Newquay
Posts: 1259
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
Loved it though! Loved the V8!
16th Aug 2017 9:28 am
Ruper
Member Since: 28 Jun 2019
Location: Virginia
Posts: 318
15 mpg in the US
Best I've had is around 15 mpg on mine (US) that's real numbers from consumption. If I ever saw 20 on my dash I would get out and celebrate.
May have a run at my coils and injectors. Whats good numbers in the US gallon market. I think we have more stop lights too,
Now I am thinking about what to upgrade to get to 20 mpg. Thanks...2005 Land Rover D3, 4.4L V8, Maya Gold Metallic
1966 Scout 800, 196 cu.in.
1975 Scout II, 392 cu.in.
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Best ever "computer figure" and I'm running on ATRs, with a snorkel and now an RLD sump plate
