I believe to reduce evaporation losses. For eg, I normally top up after 15-20 days when there is around 8-10 litres of fuel left. So possibly if a top-up is done every 10 days , it might reduce losses. Will try and see.
Palio NV Sport
average-13.5 to 14 kmpl, town driving, with 60%AC.(gear ****fs after 3000rpm only) worst 12.8kmpl
Thats fantastic from a Palio! How many kms has your car done? Is that 12.8Kmpl with 60% AC on too? If so, I'd say it should give about 11kmpl with 100% AC. Still it's fantastic mileage. Looks like Fiat did their homework really well with the NV. I still don't know why the pre-NV cars bad mileage issue spread like wild fire but the much better mileage from NV series is not getting Fiat due credit. Just proves what I have been saying for years, Indians just love a disaster story.
City: 13.5 (40 % AC), drive real smooth - of late. :-)
I drove on the Expressway, didn’t cross 80(at times let the car to come into the 70's before touching the accelerator), and was very light footed.
Initially I used to get 9-10 but then I used to push the revs way up. Have "detuned" my driving and its already helping. The car allows you to drive it comfortable in the 5th even when you are doing 45 KMPH. Also the fact that the road to my office is one of the smoothest in Pune with less traffic helps (evenings are a different story though).
Quite interesting.... appreciate if you could give us some more gyan into these points...especially points 1 and 4...
Hi..I can guess point Number:- 1 here.
Itís because of the density levels of gasoline increases/decreases with even slight change in atmospheric temperature. Itís not a wise idea though but getting it filled early morning could help because of overnight lower temperatures. So per liter of gasoline you will get more dense fuel. That fuel will have more energy levels than the low density ones. Hence you will get more mileage/performance per ltr of it. How ever personally I have never used this funda in real life situation though.
Yes, point no. 1 is due to higher density of fuels when it is cooler. Never fill in late afternoons! Point no. 4 is to perceived mainly to avoid evaporation, but in today's modern cars with expansion chambers and good sealed fuel caps/tanks it is a moot issue. The real reason for point 4 should be to avoid moisture in the fuel to condense and cause corrosion in the tank.