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Post Info TOPIC: can someone tell us the formula to find fuel versus ks please, have been told several, not sure which is right


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can someone tell us the formula to find fuel versus ks please, have been told several, not sure which is right


When travelling, each time I refuel, I fill the tank to the top, then read the trip meter & reset it to zero. I also note the reading on the cumulative speedo reading as a check.

 

The calculation for Litres per 100 km (that's the standard measure and the one that I always use) is -


Litres to fill multiplied by 100  (Read it off  the bowser to two decimal places & remove the decimal)

20.24 L to fill becomes 2024

Divide this by the KM travelled

If we travelled 100 km since the last top up, then that is 2024 divided by 100 = 20.24L/100Km

 

summary  

(Litres used x 100)/km


I have a small solar powered calculator in the folder with my fuel usage record book.

 

 

I have always kept a fuel usage record for all my long distance trips.  The details are loaded into a spreadsheet on the laptop in the evenings, that has the following headings ...

Date, Location, Speedo, Trip, Progressive Trip *, Litres, Progressive Litres *, Price/L, Cost, L/100K trip*, L/100k Progressive *, Comments

Those headings with * are worked out by a formulae in the spreadsheet.

Comments include .. Strong Head wind, Following wind, Bumpy road, Freeway driving, Up/down mountain range, no towing, speeding, etc. that give a hint to why there may be a variation to the consumption.

I find that keeping an eye on the fuel usage gives a good indicator to how the vehicle is traveling.  Also good for budgeting purposes.  But I like doing this stuff so its good for the inner me too.

 

Most importantly, welcome to the forum Wandmill



-- Edited by Cupie on Monday 30th of July 2012 04:35:41 PM

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Veteran Member

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have been told so many ways. would like to find out how many ks we are getting to the ks.  thank you



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Guru

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There will be some one out there may have a formula but I use this , Drive 100 KLM use 10 litres of fuel , would mean you get 10 klm per 1 Litre

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Guru

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Gidday wandwill, this link may assist you, just take note of Klms when you fill up, then when you refill put in Klms travelled, and Litres put in, and it will convert it for you Automatically,  http://motormouth.com.au/myvehicle/consumptioncalculator.aspx



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The Master

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I couldn't work mine out either so I filled the tank, drove 300 ks and refilled. It took 39 litres so I calculate 13 litres to 100 ks.

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The Master

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Thanks for that link dazren. That makes it so easy.

Sorry forgot, Welcome wandwill, you will get so much info on here.

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Chief one feather

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dazren wrote:

Gidday wandwill, this link may assist you, just take note of Klms when you fill up, then when you refill put in Klms travelled, and Litres put in, and it will convert it for you Automatically,  http://motormouth.com.au/myvehicle/consumptioncalculator.aspx


 Any wonder I class you as a mate Dazren, you are so hepfull and a downright nice person.



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Chief one feather

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Welcome from me wandmill, enjoy here and out there. There are lots of friendly helpful people around here, just like dazren.



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thank you so muc for your replies, we have been on the road 16months, having a wonderful time, love this country more and more each day

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Guru

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Gday...

Cupie's got it one. Good and accurate system. I also record my odometre reading, record and then zero my trip meter and record the litres taken at east fill. I then transfer that to my spreadsheet to calculate my fuel usage and a host of other useful - and useless but interesting - information.

I also carry a paper ready-reckoner in the car to have a quick "reference check" at time of fill - eases an old inquisitive mind biggrin aww

Attached is a pic of the sheet - feel free to copy/print/use to your heart's content biggrin (or ignore)

Using the sheet - eg 60litres filled, covered 500km = 12.0ltr/100km.

Cheers - John



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Guru

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smile  Dougwe wrote =========== Any wonder I class you as a mate Dazren, you are so hepfull and a downright nice person.

==================================================================================

Gee thanks Doug, You have very good taste in friends, EXCEPT, you also call wombat a friend ???? and with what he writes about you i cannot understand why ??/



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Chief one feather

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Can't be our wombat dazren, my mate wombat is a nice wombat as you are a nice person and Bohemian Gypsy a nice gypsy.

It's a nice world.

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Guru

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Fill er up, set the trip meter to 0 and when i fill up again (Must fill it right up) I just pull out the calculator and divide the K's travelled by the fuel purchased. e.g. 1500 ks travelled. Purchased 150 litres 1500 divided by 150 = 10 litres per 100.

http://www.calculatenow.biz/conversions/consumption.php?fu=150&vol=lt&dt=1500&dist=km&fc=&ratio=lpk&submit=Convert#converter
This is a good converter from the 150 litres to 1500 k's you get the following conversions

Imperial (UK) Equivalents
GallonsLitres 28.2480 miles per gallon
AND Distance Travelled: 3.5401 gallons per 100 miles
KilometersMiles 0.0354 gallons per mile
OR Fuel Consumption:
--------------------------------------------------------------------------------

Miles per GallonGallons per 100 MilesGallons per MileKilometers per LitreLitres per 100 KilometersLitres per KilometersMiles per LitreKilometers per GallonLitres per MileGallons per Kilometer SI (Metric) Equivalents
10.0000 kilometers per litre
10.0000 litres per 100 kilometers
0.1000 litres per kilometer

--------------------------------------------------------------------------------

Mixed Equivalents
6.2137 miles per litre
45.4607 kilometers per gallon
0.1609 litres per mile
0.0220

Looks like double dutch aye

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Guru

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Dougwe wrote:

Can't be our wombat dazren, my mate wombat is a nice wombat as you are a nice person and Bohemian Gypsy a nice gypsy.

It's a nice world.


 Hmmm are you on the happy juice Dougbiggrinbiggrinbiggrinbiggrinbiggrin

Michelle



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Master (of Mischief)

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BohemianGypsy wrote:
Dougwe wrote:

Can't be our wombat dazren, my mate wombat is a nice wombat as you are a nice person and Bohemian Gypsy a nice gypsy.

It's a nice world.


 Hmmm are you on the happy juice Dougbiggrinbiggrinbiggrinbiggrinbiggrin

Michelle


 me finks he is just sucking up biggrinbiggrinbiggrin

the worstest bit is that he has been able to fool my mate dazren biggrinbiggrin



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Chief one feather

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biggrinsmilesmilebiggrin



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Master (of Mischief)

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Dougwe wrote:

biggrinsmilesmilebiggrin


 



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Senior Member

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Here is my version.   After each refuel: Divide the number of litres filled by the number kilometres travelled and mulitiply the result by 100 = litres per 100 km.



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