WTF....lol
Anybody else notice this at the gas stations???
- Thread starter BLUE_KAWI
- Start date
WTF....lol
Nope, we're talking volume. 25l of gasoline at - 20 will weigh more than 25l at 30*C. It expands at higher temps & become less dense. Think about that for a while.
Weight difference obviously becomes more apparent when you're dealing with a larger volume
^^^ 25L of gas will weigh the same regardless of temp.
OP - that's not possible. My family owns a gas station and I prob know all the tricks there is, and what your describing is not one of them
Ummmm.... no. Physics failure.
I dunno man, the how to strap a bike thread still has potential
...I assumed that the gas is corrected to a certain temp and thought ahat rockerguy is talking about outdoor temps, since how can gas be at diff temps from same source on diff days ???
Otherwise, I took Engineering in UOIT and learned (and forgot) about fluid dynamics etc, let alone grade-6 science lol
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Wow all these posts and maybe a handful are useful?
OP: You need to do an average to see if the pump you are going to is ripping you off. If you are keeping track of your mileage properly and not just going by "half tank" this should be easy. When you fill on Saturday whats your trip vs say other days? Have you driven in the city a lot more, idled etc? If so this will affect your mileage.
If you complain it wont be taken seriously if you dont have proper numbers.
OP: You need to do an average to see if the pump you are going to is ripping you off. If you are keeping track of your mileage properly and not just going by "half tank" this should be easy. When you fill on Saturday whats your trip vs say other days? Have you driven in the city a lot more, idled etc? If so this will affect your mileage.
If you complain it wont be taken seriously if you dont have proper numbers.
I assume that gas is corrected to a temperature somewhat related to the temperature in the underground tank... so the pump measures the gas at the temp it is going thru the nozzle... really,, how much does an underground tank change in temp?
I drive 20km per day,, and I also find when I fill on wednesdays.. I put in 14 L.. but when I drive to sat.. I put in 20L !
it has been bugging me for years!
strange thing tho.... when I fill on wed again.... I only put in 8 L ....??? but I never complain about that!
Doh ! .... wed to wed is 7 days ... I use 14L .... wed to sat is 10 days,, and I use 20L ... both fills work out to 2L/day
I drive 20km per day,, and I also find when I fill on wednesdays.. I put in 14 L.. but when I drive to sat.. I put in 20L !
it has been bugging me for years!
strange thing tho.... when I fill on wed again.... I only put in 8 L ....??? but I never complain about that!
Doh ! .... wed to wed is 7 days ... I use 14L .... wed to sat is 10 days,, and I use 20L ... both fills work out to 2L/day
If the volume is corrected to a certain temp and the fuel is at a different temp, then obviously the density of the liquid is different if the temp is different. If the temp is significantly lower, then the density is higher. This means that the same volume of liquid will have a higher mass.
... since we aren't talking about water, which is different.
You mentioned its the same regardless of temperature. Which is false, doesn't matter if its indoor or outdoor.
When a pump states "corrected to 25*C" it simply means that the pump should measure 1L at 25*C, not at other temps. There's something called Standard Temperature & Pressure, that's an internationally accepted standard to take measurements.
Another thing is you'll get less gas at higher altitudes ie mass not volume. Volume will remain the same. Its due to something called vapour pressure
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Red_Liner740
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suzuki2000
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......jk
Roomie
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One long ass reply from 2 wet the wonder genius and this thread takes the title
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I'm surprised nobody has mentioned this yet...
Don't fill the tank from half. Never fill it unless range is an issue. You are only wasting more fuel lugging around that extra half talk, not to mention brakes. That said, I often fill anyway so I can get a roughly accurate mileage number, I suppose I could calculate with a 10l top-up between two low-fuel lights but I don't know how accurate that is, nor do I care.
Don't fill the tank from half. Never fill it unless range is an issue. You are only wasting more fuel lugging around that extra half talk, not to mention brakes. That said, I often fill anyway so I can get a roughly accurate mileage number, I suppose I could calculate with a 10l top-up between two low-fuel lights but I don't know how accurate that is, nor do I care.
The problem here is that you are filling up in Ajax.
Also, a higher dose of ethanol will affect the burn rate of the combustion which may affect your fuel efficiency ratings.
Also, a higher dose of ethanol will affect the burn rate of the combustion which may affect your fuel efficiency ratings.
