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Old 01-25-2012, 03:56 AM   #9 (permalink)
Vekke
Mechanical engineer
 
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Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 1,048

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
90 day: 104.94 mpg (US)

A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
90 day: 64.64 mpg (US)

Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
90 day: 54.57 mpg (US)

Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
90 day: 32.98 mpg (US)

A2 1.4TDI - '03 Audi A2 1.4 TDI
90 day: 45.68 mpg (US)

A2 1.4 LPG - '02 Audi A2 1.4 (75hp)
90 day: 28.54 mpg (US)
Thanks: 209
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For venctonomy. Extra 10 liters or 8.4 kg in the tank increases fuel consumption about 0.3% to 0.6%. Difference in diesel price between various stations can be easily over 10% at least in Finland. Calculate which saves more if you can drive over 200 km more and the cheapest station happens to be on your way... So you are able to get to the cheapest station more often than with "smaller" tank.

If the cheapest station is next to you it does not help so much, but even then you can do longer trips without the need to fill in at those more expensive pumps.

And yes Geo Metropolis I think your theory works just fine.
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