Not Logged In Log In   Sign Up   Points Leaders
Follow Us    4:00 PM

Message Forum - Read Message

Category: General Gas Talk > Topics Add to favorite topics   Post new topicPost New Topic
Author Topic: Do you pump slowly, in order to have less air in the gas? Back to Topics
FranklinON

All-Star Author
Ottawa

Posts:671
Points:628,965
Joined:Apr 2011
Message Posted: Jul 19, 2013 2:24:52 PM

I'm not sure if this is a myth - but I've been told that if you squeeze the pump so the fuel goes at top speed into your car, there's more air going into your tank, and you're paying for air. Conversely, if you have a light touch on the pump trigger, it takes twice as long to fill up but your gas is more 'gas', and less air, with the same overall volume & cost.

I've tried it - and so far all I can see is that I'm getting more volume into the car. Last night I put 42L into my car, which has a 40L tank, and the needle wasn't quite on E yet when I went to fill up.

I wish there were a search function on our forums, so I could find out if this has already been covered. I did check the most recent 5 pages. Does anyone know if pump speed affects the amount of air in your fuel?

REPLIES (newest first) Post a Reply
Profile Pic
CptSteve
Champion Author Illinois

Posts:14,771
Points:3,133,385
Joined:Jul 2005
Message Posted: Sep 29, 2014 11:30:53 AM

Sounds like a myth to me.
Profile Pic
rando991
All-Star Author Missouri

Posts:700
Points:719,340
Joined:Jun 2011
Message Posted: Sep 29, 2014 8:31:38 AM

naw!
Profile Pic
sheba24
Champion Author Long Island

Posts:4,795
Points:1,200,745
Joined:May 2011
Message Posted: Sep 29, 2014 8:21:47 AM

No
Profile Pic
TheOldMan25177
Rookie Author Charleston

Posts:30
Points:996,405
Joined:Mar 2009
Message Posted: Sep 29, 2014 5:17:17 AM

Myth... The air you speak of is not in the gas at the meter inside the fuel dispenser, it is foamed at the nozzle when the fuel goes thru it.
Our dispensers are checked and certified by state inspectors and during that certification both full speed and slow speed dispensing is performed.
There is a range of accuracy that is allowed during the testing, which is the same at both speeds. The meters could in fact show a slight difference in volume at the different speeds but not enough to make any noticeable difference to the consumer.

You can get the same amount of fuel in your tank pumping fast as you can pumping slow, at fast pumping you may have to go slower at the end of your fill so that the foam foam burping back up the filler neck does not shut off the nozzle.
Profile Pic
MertieMan
Champion Author Lexington

Posts:17,274
Points:3,470,535
Joined:May 2005
Message Posted: Sep 29, 2014 4:04:39 AM

Another myth, I pump fast as I can.
Profile Pic
pandora257
Rookie Author Kentucky

Posts:89
Points:14,375
Joined:Sep 2014
Message Posted: Sep 29, 2014 12:43:23 AM

hmmm...first i've heard of this
Profile Pic
estroh
Champion Author Indiana

Posts:6,112
Points:1,305,750
Joined:May 2011
Message Posted: Sep 29, 2014 12:40:22 AM

Nope
Profile Pic
hjl17
Champion Author Toronto

Posts:5,313
Points:1,179,045
Joined:Jul 2011
Message Posted: Sep 28, 2014 7:44:05 AM

No
Profile Pic
cv
Champion Author Raleigh

Posts:17,694
Points:3,840,305
Joined:Oct 2003
Message Posted: Sep 28, 2014 6:19:11 AM

I used to do that, but not now.
Profile Pic
RadarIN
Champion Author Indiana

Posts:7,591
Points:1,626,920
Joined:Mar 2009
Message Posted: Sep 28, 2014 6:07:21 AM

no
Profile Pic
Thumper52
Champion Author New Brunswick

Posts:2,345
Points:950,400
Joined:May 2006
Message Posted: Sep 28, 2014 5:44:27 AM

No
Profile Pic
BCNU
Champion Author British Columbia

Posts:16,907
Points:2,739,475
Joined:Mar 2005
Message Posted: Sep 16, 2014 1:47:11 AM

no
Profile Pic
sheba24
Champion Author Long Island

Posts:4,795
Points:1,200,745
Joined:May 2011
Message Posted: Sep 15, 2014 8:09:34 AM

No
Profile Pic
mohrorless
Champion Author New York

Posts:1,095
Points:1,110,265
Joined:Sep 2005
Message Posted: Sep 15, 2014 6:39:32 AM

I fill quickly until I know I'm near full, then I go slowly..
Profile Pic
estroh
Champion Author Indiana

Posts:6,112
Points:1,305,750
Joined:May 2011
Message Posted: Sep 11, 2014 12:03:51 AM

nope
Profile Pic
estroh
Champion Author Indiana

Posts:6,112
Points:1,305,750
Joined:May 2011
Message Posted: Sep 10, 2014 4:35:11 AM

nope
Profile Pic
rando991
All-Star Author Missouri

Posts:700
Points:719,340
Joined:Jun 2011
Message Posted: Sep 9, 2014 12:06:08 PM

huh?
Profile Pic
BartandLisa
Champion Author Newfoundland

Posts:4,656
Points:980,870
Joined:Feb 2012
Message Posted: Sep 8, 2014 10:22:45 PM

No
Profile Pic
Not4Nuthn
Veteran Author Rhode Island

Posts:303
Points:47,850
Joined:Aug 2014
Message Posted: Sep 6, 2014 9:16:51 PM

no---i want to spend as little time at the station as possible.
Profile Pic
dangasman
Champion Author Michigan

Posts:4,502
Points:1,953,750
Joined:Oct 2006
Message Posted: Sep 4, 2014 5:01:57 PM

the pumps r in the botton of the tank. no air in tank bottom. pumps wont pump air.
Profile Pic
mawtaow
Champion Author Boston

Posts:1,812
Points:944,050
Joined:Mar 2011
Message Posted: Sep 4, 2014 4:56:03 PM

no
Profile Pic
44Irish
Champion Author Ontario

Posts:1,492
Points:535,700
Joined:Mar 2007
Message Posted: Sep 3, 2014 11:24:43 AM

Makes no sense. The pick up is below the fuel level in the holding tanks.
BUSTED
Profile Pic
pt88
Champion Author North Carolina

Posts:4,836
Points:1,258,600
Joined:Dec 2009
Message Posted: Sep 3, 2014 10:54:29 AM

no
Profile Pic
nichols
Champion Author Halifax

Posts:8,871
Points:2,347,365
Joined:Aug 2003
Message Posted: Sep 3, 2014 9:01:48 AM

do not see how since the only air is what is in your car tank, in the station pump the inlet is down deep in the liquid so no air gets in.
Profile Pic
Rudolf_Golf
Rookie Author Columbus

Posts:93
Points:6,880
Joined:Feb 2014
Message Posted: Sep 2, 2014 8:48:58 PM

I think we are mixing up feeding babies and fueling up cars. ROFL.
Profile Pic
ace12012
Champion Author Phoenix

Posts:3,812
Points:789,540
Joined:Apr 2012
Message Posted: Sep 2, 2014 3:24:50 PM

no.
Profile Pic
kris4956
Rookie Author Louisiana

Posts:21
Points:1,022,730
Joined:May 2004
Message Posted: Sep 2, 2014 1:10:59 PM

Never heard of it. Will have to give it a try.
Profile Pic
sagnat
Champion Author Riverside

Posts:1,915
Points:816,680
Joined:Jun 2012
Message Posted: Sep 2, 2014 12:22:15 PM

I pump slowly for the last half gallon or so...because diesel fuel foams.
Profile Pic
sheba24
Champion Author Long Island

Posts:4,795
Points:1,200,745
Joined:May 2011
Message Posted: Sep 2, 2014 11:42:28 AM

No
Profile Pic
jwb1013
Sophomore Author Detroit

Posts:109
Points:125,160
Joined:Apr 2014
Message Posted: Sep 2, 2014 11:27:48 AM

No, but I'm going to try it
Profile Pic
SGLuz
All-Star Author Modesto

Posts:770
Points:854,365
Joined:Jun 2011
Message Posted: Sep 2, 2014 11:11:36 AM

No
Profile Pic
estroh
Champion Author Indiana

Posts:6,112
Points:1,305,750
Joined:May 2011
Message Posted: Sep 2, 2014 12:06:10 AM

nope
Profile Pic
Not4Nuthn
Veteran Author Rhode Island

Posts:303
Points:47,850
Joined:Aug 2014
Message Posted: Aug 31, 2014 9:46:47 PM

no---- because i don't think it would make a difference.
Profile Pic
46chief
Champion Author Indiana

Posts:3,450
Points:2,362,995
Joined:May 2006
Message Posted: Aug 31, 2014 1:22:30 PM

Usually.
Profile Pic
krazkar
Champion Author Calgary

Posts:2,776
Points:848,465
Joined:May 2012
Message Posted: Aug 31, 2014 12:13:39 AM

no
Profile Pic
8_Ball2014
All-Star Author North Dakota

Posts:796
Points:156,690
Joined:Jun 2014
Message Posted: Aug 30, 2014 11:58:42 PM

no
Profile Pic
diesdown
Champion Author North Carolina

Posts:1,999
Points:870,830
Joined:May 2011
Message Posted: Aug 30, 2014 4:47:29 PM

Fast, then slowly.
Profile Pic
jenksjr
All-Star Author Washington

Posts:867
Points:141,470
Joined:Oct 2009
Message Posted: Aug 30, 2014 4:28:25 PM

It's not likely that you are paying for air. The suction of the pump is immersed in the liquid and can not suck air into the pump. The pump would not work properly and it would be a safety hazard if air was introduced into the suction and pump piping.
Profile Pic
heyman_31036
Sophomore Author Georgia

Posts:102
Points:45,420
Joined:Jul 2014
Message Posted: Aug 30, 2014 4:02:57 PM

Great answer blogfrog81.

I have tried to shake my truck's bed before to see if I could get more fuel in. Not sure if it helps.
Profile Pic
PithyOpiner
Champion Author Stockton

Posts:18,464
Points:2,028,885
Joined:Jun 2008
Message Posted: Aug 18, 2014 2:30:59 PM

One time I pumped so slowly that I hardly had any air to breathe and nearly passed out right there at the gas station. I'll never pump so slowly again!!

[Edited by: PithyOpiner at 8/18/2014 2:31:39 PM EST]
Profile Pic
thomnrosie
Sophomore Author San Jose

Posts:237
Points:115,530
Joined:Jul 2014
Message Posted: Aug 18, 2014 12:51:57 PM

Sometimes I do that but not really sure if it is true.
Profile Pic
inventorymaster
Champion Author KW

Posts:4,085
Points:1,084,115
Joined:Jul 2010
Message Posted: Aug 18, 2014 8:19:40 AM

no
Profile Pic
nichols
Champion Author Halifax

Posts:8,871
Points:2,347,365
Joined:Aug 2003
Message Posted: Aug 18, 2014 8:08:57 AM

only gas coming out the pump, any air is coming out of your gas tank
Profile Pic
kdanish
All-Star Author Santa Barbara

Posts:762
Points:249,295
Joined:Jan 2014
Message Posted: Aug 8, 2014 10:38:51 AM

No
Profile Pic
tkawashima
Champion Author Honolulu

Posts:6,194
Points:1,474,065
Joined:Sep 2010
Message Posted: Aug 8, 2014 10:24:57 AM

No
Profile Pic
pt88
Champion Author North Carolina

Posts:4,836
Points:1,258,600
Joined:Dec 2009
Message Posted: Aug 8, 2014 10:11:18 AM

no
Profile Pic
gvan
Champion Author Chicago

Posts:25,104
Points:3,409,640
Joined:Dec 2004
Message Posted: Aug 8, 2014 9:58:43 AM

No. Full power!
Profile Pic
DDubyu
Champion Author Ventura

Posts:22,274
Points:3,743,250
Joined:May 2004
Message Posted: Aug 8, 2014 5:03:18 AM

No
Profile Pic
estroh
Champion Author Indiana

Posts:6,112
Points:1,305,750
Joined:May 2011
Message Posted: Aug 8, 2014 4:42:30 AM

nope
Profile Pic
MertieMan
Champion Author Lexington

Posts:17,274
Points:3,470,535
Joined:May 2005
Message Posted: Aug 6, 2014 6:11:47 AM

No, it really doesn't matter how fast you pump, this is just another myth.
Post a reply Back to Topics