Member Since: 19 Feb 2018
Location: Lincoln
Posts: 17
Winter MPG (sigh)
Anyone else noticing their fuel consumption going down?
I've gone from a balmy 29-30 down to about 25-26 over the past few file. Winter fuel additives or something else....
26th Nov 2018 9:43 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
Always found that fuel consumption goes down from the middle of November through till April and this is all diesels, gut feeling that the anti waxing additive doesn’t help.
26th Nov 2018 11:20 pm
indy4x
Member Since: 24 Nov 2017
Location: Pontypool
Posts: 193
Takes longer to warm up as well
27th Nov 2018 12:07 am
indy4x
Member Since: 24 Nov 2017
Location: Pontypool
Posts: 193
If I could get 28 to 30 regularly I'd be happy, usually around 25
27th Nov 2018 12:08 am
galwaygreen
Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525
fuel burn heater runs on fuel,,dont think you can override it
27th Nov 2018 12:26 am
Stumog
Member Since: 24 Mar 2018
Location: Bristol
Posts: 171
Funny you mention this. Mine has dropped off. Lost about 3mpg on the gauge over the normal 250mile day
27th Nov 2018 2:31 am
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
galwaygreen wrote:
fuel burn heater runs on fuel,,dont think you can override it
Some people apparently pull the can wires form the fbh plug to stop it running
I notice mine seems to run pretty much all the time the engine is running once the external temp drops.
27th Nov 2018 8:05 am
robpenrose
Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 2136
The FBH hardly uses any fuel, so not sure why anyone would disconnect it??
I find if I preheat the car with timed climate, the MPG is generally better. It’s a cold engine that Kills the mpg
Current: D4 HSE
Previous: BMW Z4M Coupe
Previous: Land Rover Defender 90 CSW Td5
Previous: Land Rover Discovery Td5 ES
27th Nov 2018 8:33 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
Flip side of the coin, I also found mpg improved by the same 10% when it got hot, like in the 30s hot. My theory is that as the tyres warm up they get softer so less rolling resistance.
27th Nov 2018 8:39 am
plocker
Member Since: 14 Mar 2016
Location: Preston
Posts: 828
Nope, still stuck at a static 13.605 V8 HSE Bonatti Grey
27th Nov 2018 9:40 am
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
robpenrose wrote:
The FBH hardly uses any fuel, so not sure why anyone would disconnect it??
I find if I preheat the car with timed climate, the MPG is generally better. It’s a cold engine that Kills the mpg
Iirc the fbh uses between 1/4 and 1/2 litre per hour at full chat.
27th Nov 2018 3:27 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
plocker wrote:
Nope, still stuck at a static 13.6
Hang on every post I see regarding v8 fuel consumption reckons 20 is easily achievable and thats the reaon they didnt bother with the diesel
27th Nov 2018 3:28 pm
plocker
Member Since: 14 Mar 2016
Location: Preston
Posts: 828
If you did a lot of motorway driving at 55mph you could get 25 I reckon. My commute to work is 3 miles of stop start through town.
You don't buy a V8 if your bothered about MPG!
I didn't bother with a diesel because I quite like the fact I'm not driving around a crank failure lottery engine05 V8 HSE Bonatti Grey
27th Nov 2018 3:38 pm
Bazza.
Member Since: 06 Jul 2018
Location: Essex
Posts: 332
Re: Winter MPG (sigh)
Sdbrinn wrote:
Anyone else noticing their fuel consumption going down?
I've gone from a balmy 29-30 down to about 25-26 over the past few file. Winter fuel additives or something else....
Over the past 20 years or so I've ran several diesel cars and vans. A good slug of redex add mix in each tank will give me up to 10% more power or MPG (depending on how I want to use it) keeps injectors in top condition and runs quieter. I've also noticed a drop in MPG since the cold weather started I'm down to 29 from 32-33 my driving is 50-50 distance and short runs.Disco 4 2012
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