What type of diesel fuel?

[toseland]

Meh, i had nothing useful to contribute and felt like trolling, sue me.

That's my job...

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Mine is also oddly high this week...more to do with the weather than the fuel I think!!  Despite using the ac most of the time now.

Sorry but im really not convinced that AC makes a blind bit of difference to fuel economy on more modern cars. Ive done comparisons on all of mine and honestly cant tell the difference so i just leave the air con on all the time!

 

In all honesty its about 0.5mpg if the system is gassed up and working well, as they are so efficient now,  and remember ack in the day A/C wasn't as tightly computer controlled. (climate control and the like) you either had it on and it blew freezing cold air until you turned it off or you didn't have it on.

I used to be able to turn the AC on with the temp on full in the winter in my first fiesta. beautiful for clearning the windscreen but a pain in the ass if you forgot to turn it off.

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Well I thought it could be a generous pump but when I first used it to fill up it cost pretty much the same as what other pumps cost. +/- cost differences

I think you will find that when it comes to "free stuff" and "especially free fuel"  there is no such thing as a "generous pump"

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The main portion of fuel is hydrocarbon chains... You can't have a tankful of betterer hydrocarbons... The chemical reaction that goes on is simply not able to be affected like that and cause a bump in the economy by that much... Nor can additives make that much difference!

It'll be something you've not even considered...

My hydrocarbon chains bring all the boys to the yard.
And they're like, it's better than yours.
Damn right it's better than yours.
I could teach you, but I have to charge.

Temprature of the fuel itself. Expands when hot meaning less fuel for your money.

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Also lol tom

density of petrol is approx. ~750g/L at 20degrees
the mean ground temperature from half a meter to about 15meters is between 8 and 11 degrees between winter and summer
Petrol's density changes between 0.5 and 1% depending on additives for every 5degree change in temperature

in the UK a "standard litre" of fuel (the density/mass of 1 litre of fuel, at 15degreesC)

so for a 60 litre tank, a very generous figure would be that the fuel, sold at 9 degrees will expand by 600ml in volume on a 15degree day which is negligible when you consider you don't fill a full tank

Forecourts are required to, if they have STA (Standard temperature adjustment) enabled equipment to leave it on all year. It is considered an offence under weights and measures, and sale of goods and services act to turn it on and off (for example off when its hot and they are selling less fuel by volume) and on in the winter when they are selling more fuel by volume to adjust the content to a given temperature.