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Biffy Note Log

2005 Toyota Avensis
Property of theoilburner. Added Dec 9 2010

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Dec 14 2010

I'm beginning to wonder if the inconsistent values from brim-to-brim figures (computer values appear OK, but are sometimes out) may be caused by the fuel shut-off device in the filler neck? Perhaps it is less sensitive during colder conditions, resulting in more fuel in and therefore, seemingly lower actual economy versus reported economy on computer. Maybe. Either that or there is some very iffy calibration on some local fuel pumps!

Added by theoilburner on Dec 15 2010 at 12:23 am

Dec 12 2010

Given the last two strange readings, the most sensible way to look at it is to get the average of these two tanks, which gives 44.5mpg for the trip up and back from Scotland. That seems to be a more likely figure and is consistent with previous data.

Added by theoilburner on Dec 14 2010 at 5:53 am

Dec 6 2010

Oil changed, used fully synth 5W30. Tyre pressures set at 35psi all round. Car running noticeably better now.

  • 44,300

Added by theoilburner on Dec 14 2010 at 5:37 am

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