is it better to pump petrol when the tank is half full or near empty?
reason given is:
-if half full then pump petrol, the amount of petrol changing into gas and lost is minimise but then the car is heavier and use more petrol

pls give ur comment. tq

This post has been edited by kei18kun: Mar 4 2009, 07:50 PM

what is the difference between half full and half empty?
I normally pump when the meter shows F (finish)

This post has been edited by leanman: Mar 4 2009, 07:47 PM

when is 2nd last bar

nah..not much different.....full tank make the car abit heavier...but pickup u wont notice......just fill up full tank and enjoy ur driving and fewer trips to petrol station......i

when i feel like eating ice cream i pump... n when i pump i pump till full lor

i think not too much different?!
mayb at nite preferred?

whether u pump half full or near empty, the amount of petrol evaporation will still be the same isnt it?
Just the matter of doing it once for whole tank, or twice for half tank and half tank

About the car heavier, yes it will be heavier but dude....u are not F1 racer, slight weight doesnt even do much for u...

If not mistaken.
At nite is the best time to pump.
That what my brother always do.
Pump at nite less evaporation.
Why..
Less escape through the hole for gas.
Like water in a bottle.
More Evaporation faster escape.
Less Evaporation slow escape of gas.

Please do correct me.

some myth..

pump at nite to reduce gas evaporation
but according to some.. the land surrounding the tank is still hot (even it is night already).. so no difference.

i suggest pump during the day (early in the morning)..
coz.. according to my myth.. the land surrounding the tank is still cold.. so the gas will less evaporate to the thin air.

Dun wait till light come out only pump.. You will indirectly spoilt your Fuel Meter Sensor.. Just pump whenever you are free...

Yeah early in the morning before sunrise.
Before sunrise is the coldest point of the day.

Is tat true?? I always wait til light come out only pump wo, sometimes come out i also havent pump...still drive more 50km++. but after pump, found tat inside still got 10 litre petrol left.

Go Genting Highland pump lor...
The Esso there... fuel should be at the maximum density.

Yup....it is true.. It might not spoilt if you do that for short term, but for long term it will.. If ur sensor spoilt d, fuel wanna empty already also the light wont come on anymore.. Its better to be safe and sorry.

sure ar your car meter shows F for finish
i thought have F=full and E=empty

hahaha spot on!

not true, been doing that for 13years and my fuel indicator still functioning as usual
everything is subjected to wear and tear.. even the best silicon wiper cant last u a lifetime

tumpang thread, as u know the gas pump handle has a speed selector, whether to pump it fast or slow.

why since day one when i bought my satria neo, i cannot pump in the fastest speed? & the handle will jump as in stopped automatically.

the only solution is to pump it in a slower speed.

why like that? is it too much gas vapour in the tank that causes it?

I though E is for Enough? enough to go to petrol pump, if E = empty your cannot more already.

Ok this is what I heard but can't confirm but makes sense to me:

1. Pump early in the morning because the gas is the coldest at that time. In the evening heat is still retained in the concrete thus pumping fuel late evening is still warmer then morning. In science molecules contract when its colder. Following that priciple you should get more bang for your buck when you pump in the morning.

2. The petrol tanks are also refilled in the evening and will stir up the petrol and moving the sediments, If you are pumping at that or after that time the sediments might be pumped into your car.

3. Pumping at lower speeds might take longer but there will be less evaporation. Its like washing your car when you on more water, more spray will be created especially when you hit the car.

4. Pumping half tank is better because there will be a point that the fuel can't evaporate due to saturation in the. Larger empty portion = more evaporated gas. Also its no fun when your tank shows empty and you are not near a station. Heh.

5. Safer to also pump in the morning as more people and robbers are less like to rob then.