TIPS ON PUMPING GAS (Good information)
I don't know what you guys are paying for gasoline.... but here in California we are also paying higher, up to $3.50 per gallon. But my line of work is in petroleum for about 31 years now, so here are some tricks to get more of your money's worth for every gallon..

Here at the Kinder Morgan Pipeline in San Jose, CA we deliver about 4 million gallons in a 24-hour period thru the pipeline. One day is diesel the next day is jet fuel, and gasoline, regular and premium grades. We have 34-storage tanks here with a total capacity of 16,800,000 gallons.

Only buy or fill up your car or truck in the early morning when the ground temperature is still cold. Remember that all service stations have their storage tanks buried below ground. The colder the ground the more dense the gasoline, when it gets warmer gasoline expands, so buying in the afternoon or in the evening....your gallon is not exactly a gallon. In the petroleum business, the specific gravity and the temperature of the gasoline, diesel and jet fuel, ethanol and other petroleum products plays an important role.

A 1-degree rise in temperature is a big deal for this business. But the service stations do not have temperature compensation at the pumps.

When you're filling up do not squeeze the trigger of the nozzle to a fast mode. If you look you will see that the trigger has three (3) stages: low, middle, and high. In slow mode you should be pumping on low speed, thereby minimizing the vapors that are created while you are pumping. All hoses at the pump have a vapor return. If you are pumping on the fast rate, some of the liquid that goes to your tank becomes vapor. Those vapors are being sucked up and back into the underground storage tank so you're getting less worth for your money.



One of the most important tips is to fill up when your gas tank is HALF
FULL or HALF EMPTY. The reason for this is, the more gas you have in your tank the less air occupying its empty space. Gasoline evaporates faster than you can imagine. Gasoline storage tanks have an internal floating roof. This roof serves as zero clearance between the gas and the atmosphere, so it minimizes the evaporation. Unlike service stations, here where I work, every truck that we load is temperature compensated so that every gallon is actually the exact amount.



Another reminder, if there is a gasoline truck pumping into the storage tanks when you stop to buy gas, DO NOT fill up--most likely the gasoline is being stirred up as the gas is being delivered, and you might pick up some of the dirt that normally settles on the bottom.



Hope this will help you get the most value for your money.

Fascinating!
I've always filled up when the gauge was down to half.
I've never paid any attention to the time of day, just whenever I was passing by and it was time to fill up.
Won't need to worry about hot or cold for the next few months, tho'.

Gasoline nearest my house is $3.19 (Exxon); in the village, on the main drag, it's $3.09. I can't see any difference in the mileage I get, so if I'm in town when it's time to fill up, of course I stop at the cheap place. (GoMart)

Incidentally, I buy 2% milk (Broughten's) at $3.90 at Dollar General. It's well over $4 in the grocery stores.

I never gas up when I see a gas truck in the station lot. Dh told me that many years back, and repeated it over and over until I learned it :) .

I also fill up at 1/2 tank....today, with the temp. @ 20 degrees, the price was $3.29 a gallon.....I usually gassed up when the weather was calmest-or I'm driving by. The next few months it will always be cold...but :aw: don't know if I really want to get out and stand by the car when temp. are 0 or below, especially if later in the day it might get as warm as 25 degrees above 0 F . :ha: What do you think...will it make much differance when tempetures don't get over 32 degress F.....What do you think?

I didn't realize that it is better to fill it at the slow speed. That sounds a bit baffeling -- if the vapors go back into the storage tank, doesn't that make more room for the actual gas in my tank???? Or is there a build-up of vapor, with some going back into the starage tank but lots in my tank??? Is this a 'blonde thing' or a 'senior thing' :ha:

Good advice for everyone.