Goldman mulls collapse in gasoline demand

Overnight said:
Fascinating. I've been driving a variety of older and newer cars over the many years of my driving career, and have never seen this happen. Once. Ever. (And I fill to the brimmy brim brim of my car's chinny-chin chin if gasoline is cheep and I think I am buying gas during a price lull.) That statement in the quote is hypothesis, not applied.

P.S. There are a lot of other variables in that statement that are not considered as factual, such as the fact that a car's gas tank is usually shielded from sun, considering where it is located...Or what happens when you pump warmer insulated gas from an underground tank into your car which has suffered a sudden cold snap-shift of 30-50 degrees at equinox change-over, in the past 24-48 hours. It happens in temperate zones you know.

P.P.S. That sort of thing is gong to happen in the next 48 hours here in New England, by the way. High today was 57 degrees. Projected low for early Saturday morning? 10 degrees. So there we are.
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Since you're the only one responding, this was a "Serious" post. I think if I had left out the quoted source, it would've been more obvious but this has me thinking.

Just an FYI - you're not supposed to fill the gas tank to the top as it could damage the car's EVAP system. Find out the max gallons of gas the tank can hold and subtract 1-2 gallons, that's the new max you should be putting in.
 
What goes on in Canada:
Questions and Answers on The Effect of Automatic Temperature Compensation on Fuel Sales


The volume of a liquid fuel expands and contracts with changes in temperature. The process of temperature compensation allows for a measured volume of fuel to be adjusted to the volume it would occupy if it were measured at 15 °C. Selling temperature compensated fuel eliminates inequities caused by changes in volume due to temperature variations. An electronic device called an automatic temperature compensator measures the temperature of the fuel during delivery and automatically calculates the amount of fuel as though it had been delivered at 15 °C. The words "Volume Corrected to 15 °C" must appear immediately next to the displayed net quantity on all fuel pumps equipped with an automatic temperature compensator. In Canada, the use of automatic temperature compensation (ATC) is optional on gasoline and diesel fuel pumps, but is mandatory for the sale of propane as an automotive fuel.
 
Covertibility said:
Just an FYI - you're not supposed to fill the gas tank to the top as it could damage the car's EVAP system. Find out the max gallons of gas the tank can hold and subtract 1-2 gallons, that's the new max you should be putting in.
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My cars' EVAPs have never suffered damage by doing this. The point was that the statement that warming weather can cause gasoline to shoot out of the filler neck when it expands, is wrong in my experience.
 
Overnight said:
My cars' EVAPs have never suffered damage by doing this. The point was that the statement that warming weather can cause gasoline to shoot out of the filler neck when it expands, is wrong in my experience.
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I gotta agree with Overnight on this one. Gasoline's Volumetric Coefficient of Expansion is 0.00053 per degree F, so gasoline isn't going to expand much beyond what the tank can handle given that it typically shuts off at about 1/2 a gallon from full anyway and you seldom park at the gas station immediately after filling up.
I used to be a professional pilot and aircraft are routinely topped off when sitting for overnight or longer to prevent condensation with many times the volume of a car with no venting of fuel, so I'd say this isn't a huge concern.
 
Sig said:
I gotta agree with Overnight on this one. Gasoline's Volumetric Coefficient of Expansion is 0.00053 per degree F, so gasoline isn't going to expand much beyond what the tank can handle given that it typically shuts off at about 1/2 a gallon from full anyway and you seldom park at the gas station immediately after filling up.
I used to be a professional pilot and aircraft are routinely topped off when sitting for overnight or longer to prevent condensation with many times the volume of a car with no venting of fuel, so I'd say this isn't a huge concern.
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Ahh, fellow pilot in the house! *high five* (I never got my private license though, ran out of time and money). But yep yep, the tanks were always topped off at end of day just as you said to keep the water accumulation as low as possible. And even with the tanks full, you'd still find water in the strainer cup on occasion, the next morning.
 
Overnight said:
Ahh, fellow pilot in the house! *high five* (I never got my private license though, ran out of time and money). But yep yep, the tanks were always topped off at end of day just as you said to keep the water accumulation as low as possible. And even with the tanks full, you'd still find water in the strainer cup on occasion, the next morning.
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You may want to look into the recreational pilot's license if it wasn't around when you were doing your training. It's restrictive in what you can do but they're all pretty good restrictions in that they ensure you're only flying in the safest conditions, and you might have enough hours that you could do a couple hours of refresher training and be good to go!
 
Bah. The best for me would be the sport license since there's no medical for that one, last I know. Kidney stone history is an instant disqualifier on all medical classes, IIRC. Been years since I looked into all that.

Again, it all comes down to money and time. *sighs* Alas. But oh, such good memories.
 
Overnight said:
My cars' EVAPs have never suffered damage by doing this. The point was that the statement that warming weather can cause gasoline to shoot out of the filler neck when it expands, is wrong in my experience.
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It wouldn't shoot out of the filler neck but rather exit via the overflow tube.
 
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