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Author Topic: Do you keep your tank full? Back to Topics
JunGleJimBo

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Orange County

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Message Posted: Sep 25, 2009 2:20:45 PM

After reading several replies on "what time of day do you fill up", it got me to thinking, ...

Should you fill up the tank if you only drive in the city? It seems that if you are only driving a short distance anyway, you can save 50 or more pounds ov extra weight. (Fuel weighs app. 6.25 lbs per gallon. Don't put in 8 gallons, you save 50 lbs.) The problem I see is possibly water getting in the fuel through condensation, or extra dirt or other solids blocking the filter. Any thoughts?

I remember back in high school, a friend had a suoped up American Rambler. All us kids would pitch in our lunch money to put in enough gas to get to and from school. It was a blast to ride around in, but we never had enough money to put in more than 1/4 tank or so. Then in 1-2 days, another trip down to the cheapest station in town! Those were fun times!

JimBo
REPLIES (newest first) Post a Reply
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Jay4Runner
Champion Author Oakland

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Message Posted: Nov 18, 2014 10:30:51 PM

Just today I topped off when I was at 1/2 tank.
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calypso93
Champion Author Scranton

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Message Posted: Nov 17, 2014 6:14:04 AM

Fill up at 3/8-1/4.
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twt
Champion Author Virginia Beach

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Message Posted: Nov 17, 2014 2:36:17 AM

No. I fill, when it reaches a quarter tank.
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poetdog73
Champion Author Toledo

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Message Posted: Nov 17, 2014 12:19:00 AM

no
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jl1rp
Champion Author New Hampshire

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Message Posted: Nov 16, 2014 11:13:59 PM

no
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RealtorJeff
All-Star Author San Diego

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Message Posted: Nov 16, 2014 8:31:45 PM

Usually fill up at around a 1/4 tank. Do not think there is any advantage to keeping the tank towards empty.
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zippok
Veteran Author Twin Cities

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Message Posted: Nov 16, 2014 7:08:57 PM

never let the refineries store their own gas, if everyone did the same they would run out of storage and have to lower the price more to move it.
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GasMiser718
Champion Author Detroit

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Message Posted: Nov 16, 2014 8:57:14 AM

I go the the station to fill up, then i'll drive till 1/4 tank then fill again.
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Tucsonhomes
Champion Author Tucson

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Message Posted: Nov 15, 2014 12:45:48 PM

Full at fill up
Until empty
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GLM4205
Champion Author Toledo

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Message Posted: Nov 15, 2014 10:18:44 AM

Like to
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badbobKY
All-Star Author Lexington

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Message Posted: Nov 15, 2014 8:59:04 AM

yes
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dontuknowOH
Champion Author Ohio

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Message Posted: Nov 15, 2014 8:39:58 AM

Our daily driver is a 2 LTR. powered, so I normally keep only 1/3....1/2 tank of fuel aboard, which is used then for mostly city/suburb/shopping routes type driving.

The smaller weight factor aboard is noticed, during stop/go conditions, much less driving highway. No worries because there are fuel stations everywhere along our travel areas city. I never drop capacity enough for the fuel light to come on, but top the tank when prices are the lowest.

I notice that my Aux...DRL's on for highway do use more fuel when driving highway speeds. This with a 2 LTR. engine is because of the extra alternator energy load pulled by the smaller engine when those extra lights are on. The extra fuel tank weight load isn't noticed driving steady highway, with a fuller tank as a mileage loss.

During cold weather I do keep more fuel in the tank, not because of moisture, but for weight balance and less tank filling due to extra restarts cause colder weather Restart Enrichment Losses for engine run time.

Larger engines show less variation in mileage concerning tank fuel weight/accessary use, the idle torque is greater and low engine rpm at highway zone speeds are not significant for those V/6...V/8 engines which have the extra torque where running the alternator toward higher capacity.

Same for fuel tank capacity weight, simply the larger engines never get strained in any way by the minor load changes that a small engine notices as extra loading. aIsi.......
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EVBuddy
Champion Author Nevada

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Message Posted: Nov 14, 2014 12:21:25 PM

No, never full for long
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carinthuist
Champion Author San Francisco

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Message Posted: Nov 14, 2014 11:33:29 AM

yes
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Boyrr
Champion Author Allentown

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Message Posted: Nov 14, 2014 6:20:24 AM

yup, every time I fill it
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SRT8TX
Champion Author Dallas

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Message Posted: Nov 14, 2014 2:23:07 AM

Yes
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southtown43701
Champion Author Ohio

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Message Posted: Nov 14, 2014 1:12:51 AM

no
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GasMiser718
Champion Author Detroit

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Message Posted: Nov 13, 2014 9:26:41 PM

Now its getting cold I won't let it below 1/2 tank...
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krazkar
Champion Author Calgary

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Message Posted: Nov 8, 2014 12:23:57 AM

Try to keep over half
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GasMiser718
Champion Author Detroit

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Message Posted: Nov 7, 2014 12:51:59 PM

I don't let it get below 1/4 tank. Then I fill it up again
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dontuknowOH
Champion Author Ohio

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Message Posted: Nov 5, 2014 8:21:08 AM

With our vehicles turned off I can say they all have fuller tanks now since the pump prices have dropped to more reasonable prices locally. That's levels of 3/4+ tank from past 1/3 full capacity average. Even the truck/tractor/misc.
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redfish67
Champion Author Dallas

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Message Posted: Nov 4, 2014 9:44:17 AM

pretty hard to do if you drive
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MertieMan
Champion Author Lexington

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Message Posted: Nov 4, 2014 6:59:31 AM

Zackly how can you always keep a tank full when it starts going down the moment you drive away from the pumps. Get real!
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poetdog73
Champion Author Toledo

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Message Posted: Nov 4, 2014 12:12:38 AM

yes when gas hits its low spots
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proudvet1
Rookie Author Atlanta

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Message Posted: Nov 3, 2014 11:20:44 PM

Yes
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GasMiser718
Champion Author Detroit

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Message Posted: Nov 2, 2014 10:18:42 AM

In the summer I fill it up then drive till its down to 1/4 then fill it up again. Winter time is different I don't like letting condensation build up in the cold tank so I may fill it up every couple of days. I might even put a little bit higher octane fuel in it....
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badbobKY
All-Star Author Lexington

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Message Posted: Oct 29, 2014 7:07:46 AM

yes
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Ratso
Champion Author Ohio

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Message Posted: Oct 29, 2014 6:15:57 AM

Yes every time I stop for fuel, I fill it up ....
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randy3116
Champion Author Tennessee

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Message Posted: Oct 29, 2014 5:42:07 AM

i fill up at each stop when my fuel level reaches the 1/2 mark
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GLM4205
Champion Author Toledo

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Message Posted: Oct 29, 2014 5:36:03 AM

Mostly
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dontuknowOH
Champion Author Ohio

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Message Posted: Oct 28, 2014 8:26:04 PM

Since fuel prices have dropped, I have topped one vehicle and the others are retaining 3/4 tank recently. The $2.94 a gal was a motive last time I refueled.
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Mikeyy1960
Veteran Author Cape Coral

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Message Posted: Oct 28, 2014 8:07:05 PM

i refuel when low fuel light come on
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cv
Champion Author Raleigh

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Message Posted: Oct 23, 2014 5:35:05 AM

I fill up after reaching 1/2 tank or less.
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RRBC
Champion Author Victoria

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Message Posted: Oct 21, 2014 7:18:19 PM

not ususally
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twt
Champion Author Virginia Beach

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Message Posted: Oct 16, 2014 8:16:19 AM

I fill, at a quarter tank.
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Madridjoe
Veteran Author Lancaster

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Message Posted: Oct 16, 2014 7:49:10 AM

I fill up when it gets to half
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hoopitup2000
Champion Author Virginia

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Message Posted: Oct 16, 2014 6:31:03 AM

No, I run it down to at least half before refilling
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randy3116
Champion Author Tennessee

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Message Posted: Oct 16, 2014 5:33:53 AM

i fill the tank at each fuel stop
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jl1rp
Champion Author New Hampshire

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Message Posted: Oct 16, 2014 12:41:13 AM

no
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Boyrr
Champion Author Allentown

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Message Posted: Oct 11, 2014 3:54:43 PM

only when I fill it, after that, it's dropping until I fill it again.
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twt
Champion Author Virginia Beach

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Message Posted: Oct 11, 2014 6:28:02 AM

I fill, when it gets to a quarter tank.
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linku2gasbuddy
Sophomore Author Dallas

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Message Posted: Oct 10, 2014 10:41:17 PM

No.
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carinthuist
Champion Author San Francisco

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Message Posted: Oct 10, 2014 4:45:22 PM

try two
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retcap201
Champion Author Austin

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Message Posted: Oct 10, 2014 10:02:43 AM

don't let it go below half
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weddy11
Champion Author Phoenix

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Message Posted: Oct 10, 2014 9:55:44 AM

once every two weeks
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HideMKE
Champion Author Milwaukee

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Message Posted: Oct 9, 2014 9:01:52 AM

no
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cwwilliams1978
Rookie Author Austin

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Message Posted: Oct 9, 2014 8:21:14 AM

sometimes if I have the money I do.
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aaamanMI
Champion Author Ann Arbor

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Message Posted: Oct 9, 2014 8:01:25 AM

no
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cv
Champion Author Raleigh

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Message Posted: Oct 8, 2014 5:30:05 AM

Each time I buy gas, I do fill the tank.
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contiki
Champion Author Ontario

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Message Posted: Oct 7, 2014 7:34:47 AM

not always............
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