Member Since: 21 Oct 2016
Location: kent
Posts: 13604
Hardware17 wrote:
I only dream of 29 mpg !!! (average speed of 14mph over last 3 fill-ups probably explains that)
in theory ... colder input air would give better mpg but it's totally wiped out by warm-up time, winter fuel, and extra loads from heated rear window/seats, lights etc.
i’m getting around 26 - 28mpg on a run, brimming the tank , alas the display tried to make me feel better by lying as always
indeed , first thing on a winter morning , it displays around 15mpg , don’t worry about it too much now , just fill up as required
had mine just over a year and regardless of all the work i’ve done i still adore it and wouldn’t change it for the world
3rd Jan 2018 3:17 pm
bammmy
Member Since: 12 Jan 2013
Location: Manchester
Posts: 138
An article I have been reading mentions putting 2 stroke oil in with the diesel tank. Has anyone with a D4 SDV6 tried this, I have read all 50 pages of whys and why not, seems to be mostly D3’s though.
Am using Redex every other tank, still not sure if it’s actually doing anything performance wise or even cleaning anything.
3rd Jan 2018 3:53 pm
Jubbly
Member Since: 20 Nov 2016
Location: Stourbridge
Posts: 401
but have to say neither have made any difference that I can see.Jaguar I-Pace HSE imminent.
Gone HSE with Flappy Paddles. IID BT tool. RLD Spare Protector, Altox GPS.
3rd Jan 2018 8:20 pm
Mogwyth
Member Since: 03 Oct 2014
Location: Pwllheli
Posts: 3976
bammmy wrote:
An article I have been reading mentions putting 2 stroke oil in with the diesel tank. Has anyone with a D4 SDV6 tried this, I have read all 50 pages of whys and why not, seems to be mostly D3’s though.
My opinion nothing more, but what ever positives people claim, there must be a downside, because if there was a way of making fuel better without compromising something dont you think every car expert worth their salt would recommend it.
Personally I think the only way to good fuel economy without comprising something is a well maintained engine and drive it like Miss Daisy, happy to ensure the former and life is too short for the latter If i want good fuel economy I'll use the wife's Juke, supermini the D3/4 aint whatever fuel.==================================
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
3rd Jan 2018 8:29 pm
bammmy
Member Since: 12 Jan 2013
Location: Manchester
Posts: 138
Hi,
Firstly many thanks for all your thoughts.
I have tried the thermal imaging camera and shows brake discs at around 15deg all around , give or take, after a medium run. I am going to try the Shell V power fuel next to see if things improve, may still continue to throw a bit of Redex in. I am aware of the premium fuel cost as well as the cost of the Redex, it could work out false economy, perhaps robbing Peter to pay Paul, but i’ll see.
A great point which has been said, which I totally agree with is, it’s not a Mini so will not get that kind of fuel return and I really enjoy the drive of a Discovery I don’t think there is anything better to suit our needs. We use it for our dog, I use it for work, it fits into our boat life, we use it socially, it really is a ten out of ten all rounder.
This was/is just a test for me to see if I can improve things, either way I will update.
Again still open to people’s thoughts.
Mark
6th Jan 2018 10:35 am
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23334
I record my fuel use on the Road Trip fuel app. Since mid December the mpg I’m getting is 1-2mpg less.
This is almost certainly due to the additives in diesel fuel at this time year, which prevent waxing.2006 D3 HSE (Original & still the best)-GONE
2010 D4 HSE (A bit bling)-GONE
2014 D4 HSE (Almost too bling)-GONE
2015 D4 HSE (A heated what?)-GONE
2016 D4 Landmark (Written Off)-GONE
2016 D4 Landmark (Surely the last!) PD1881 rims-GONE
2017 FFRR SDV8 Autobiography
Last edited by LT on 6th Jan 2018 6:08 pm. Edited 1 time in total
6th Jan 2018 1:33 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72774
bammmy, what are you trying to achieve/get back to and under what conditions (cold/short urban, twisty A roads, slow motorway, fast motorway, etc). Many, many peeps start driving these cars thinking they will get much better mpg than they actually get, and in the end they get the same as the rest of us. Sometimes peeps see a ridiculously high number on the trip comp, way higher than reality, and think they should be getting that all the time. Well it doesn't work like that. Expect, under ideal conditions & economical driving (60mph cruising on motorways) to get slightly under or slightly over 30mpg. My D4 has done that 95% of the last 16,500 miles and it's real average is 31.0 mpg.
Del, I've watched a glacier overtake you, stop of to let the mammoths have a coffee and still arrive at our destination before you. Your MPG figures are not representative!
6th Jan 2018 7:22 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72774
Any faster and both me and the mammoths would get a nose bleed. I'm not in a hurry.
6th Jan 2018 7:36 pm
Randylover
Member Since: 31 Jan 2011
Location: Staffordshire
Posts: 1172
My DMF is on its way out and as it gets worse the mpg has gone down also
The clock rekons it’s doing 19mpg atm just waiting for it to culminate then I’ll claim in breakdown ins
For replacement
Andy05 TDV6,"S" in all colourcoded Zermatt silver,7 seats winter pack HK 6cd stereo,Dual climate,Xenons,
Mods:
Re-Con Engine,De-Tango,Reverse camera,Fog/DRl lights,Aux Battery, perm Aux socket in boot,LED Volt meters in roof panel,Built in tom tom, Strobes fitted in grille, Aux switches for trailer lights fitted in roof panel,Roof Rails,Grille conversion
6th Jan 2018 7:42 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72774
DMF??
PS ah, clutch thingie.
6th Jan 2018 7:45 pm
Randylover
Member Since: 31 Jan 2011
Location: Staffordshire
Posts: 1172
05 TDV6,"S" in all colourcoded Zermatt silver,7 seats winter pack HK 6cd stereo,Dual climate,Xenons,
Mods:
Re-Con Engine,De-Tango,Reverse camera,Fog/DRl lights,Aux Battery, perm Aux socket in boot,LED Volt meters in roof panel,Built in tom tom, Strobes fitted in grille, Aux switches for trailer lights fitted in roof panel,Roof Rails,Grille conversion
6th Jan 2018 8:10 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72774
Good to see my techie super-skills Google works well.
6th Jan 2018 8:12 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
but have to say neither have made any difference that I can see.
Over the years I have tried just about every product in my various car fuel tanks (out of curio) after hearing people rave about how much better it made their car etc and I have to say I never noticed one jot of difference to the sound/starting or mpg!
6th Jan 2018 8:24 pm
Jubbly
Member Since: 20 Nov 2016
Location: Stourbridge
Posts: 401
I'm with you there, nothing i've tried makes any difference, not even premium fuels.
Shell diesel was the best in my audi, but it's £1.269 for shell or £1.149 for sainsburys diesel per litter, so no competition.Jaguar I-Pace HSE imminent.
Gone HSE with Flappy Paddles. IID BT tool. RLD Spare Protector, Altox GPS.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
If i want good fuel economy I'll use the wife's Juke, supermini the D3/4 aint whatever fuel.
