Fuel consumption / economy report

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Originally Posted by threedogs

Same as Kallen ,,,,, I heard vehicle manfacturers were allowed 10% error in speedo readings.
Get a speeding ticket they only give you 3% error funny eh

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ADR's were changed a while ago now and the current formula is a tad hard to type out but is essentially...
The speedo cannot underread at all at any speed (IE you can't be going faster than indicated)
The speedo must overread by between 0 KPH + 4 KPH + up to 10% of the actual speed
EG at 80KPH actual the speedo must read between 80 and 92 KPH (80 + 4 + 10% of 80 which is another 8)

It is because of the 'new' ADR saying that it cannot overread that the Feds can get away with zero tolerance on speeding if they so choose

We got 15.54l/100 on the highway from Melbourn in our 98 2.8L GU. Is there any way of improving that?.

Anyone know how many litres in the main tank would be used when the light comes on?
I decided to see what fuel eco i get but i wasnt anywhere near a servo to record the litres for a fill up.

Dunno mate. They usually allow 50k so maybe 10L

Another question to all running sub tanks..
Do yas fill up both tanks and work from both..
As we know the sub transfers a bit each start up so the added extra could be giving false outcomes if just working from main tank use..

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Originally Posted by mudski

Anyone know how many litres in the main tank would be used when the light comes on?
I decided to see what fuel eco i get but i wasnt anywhere near a servo to record the litres for a fill up.

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There is about 20 ltrs left when the light comes on with mine anyway ,hope that helps

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Originally Posted by Marc Allen

We got 15.54l/100 on the highway from Melbourn in our 98 2.8L GU. Is there any way of improving that?.

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run 40psi for hwy driving and stick to 100kph as best you can

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Originally Posted by biggqwesty

Dunno mate. They usually allow 50k so maybe 10L

Another question to all running sub tanks..
Do yas fill up both tanks and work from both..
As we know the sub transfers a bit each start up so the added extra could be giving false outcomes if just working from main tank use..

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I'll put $20 in the sub when I fill up if not going away, and transfer when the need arises.
Going away I'll fill both obviously. $1.16 a ltr ATM here

Quote:

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Originally Posted by biggqwesty

Dunno mate. They usually allow 50k so maybe 10L

Another question to all running sub tanks..
Do yas fill up both tanks and work from both..
As we know the sub transfers a bit each start up so the added extra could be giving false outcomes if just working from main tank use..

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I always try and have at least 1/2 tank full in the sub around town.

I don't think the sub tank draws much on start up, maybe only couple 100mls


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Id always have some fuel in the sub, even if just to keep things lubed

I fill both tanks at the same time... once the main runs out i fill it with half of the sub tank.. once that runs out use the rest of the sub tank.. helps keep a bit of lube in the tanks at all times.

Since changing from a Dawes to Tillix i have got a lot better economy.. not sure how as i have the needle/spool rate set about the same... I used to struggle to get 700km out of both... today my fuel light come on, on the main and it just clicked over 700km... So pretty much my whole subtank is bonus economy now...

700km out of a main tank is about normal for a DI?

And bonus was i got a whole tank worth of driving without having to replace my pistons :D