One for Tom

[toseland]

65 is the absolute maximum I've squeezed in.
But I think ambient temperature has an effect on the density of the fuel at the pump.
Hot weather equals less density which means you put more in. Just a thought

this would be three but for two things



1. Most petrol stations use temperature compensated pumps..  most oil refineries sell their oil on the baseline of how much 1 litre is at 15degrees C (in otherwords they will measure exactly 1litre when the fuel temperature is 15degrees C.

nearly all petrol pumps since about 1995 are temperature compensating as the technology is simple to fit, that meaning they know how much volume the fuel should have at 15degrees and the linear relationship between that and temperature and compensate accordingly so you always get "1 litre at 15degree's worth"

2. the ground temperature in the UK remains pretty constant at around 10degrees

3. diesel expands around 0.07% per degree,  meaning over a 60litre tank, if the temperature rises 10degrees (say, 15 at night to 25 during the day) you are looking at 420ml