Fuel - to top off or not to top off?
3/14/13 | 03:28 PM
#1
Thread Starter
Cobra Member
Joined: January 4, 2013
Posts: 1,324
Likes: 44
From: Frisco, TX
Fuel - to top off or not to top off?
I am new to Mustangs and have no experience with the new fuel filler on my Mustang other than having refueled it twice. My instruments said I had used 11.25 gallons at the last fillup, but it took less than 11.1 gallons before the nozzle shut off. Is it a problem if I trigger the nozzle again to top it off? In the cars I am familiar with I can hear the difference when it is close to overflowing. I ask this because on long road trips I want as much range as I can get.
3/14/13 | 04:36 PM
#6
Thread Starter
Cobra Member
Joined: January 4, 2013
Posts: 1,324
Likes: 44
From: Frisco, TX
I just found a statement in the owner's manual that says allow no more than two automatic click-offs when refueling. I think that's my answer. The second click-off would likely have taken the amount pumped to very close to the 11.25 gallons I was supposed to have used.
3/14/13 | 05:34 PM
#8
GT Member
Joined: October 12, 2012
Posts: 138
Likes: 0
From: Brown County, WI
on my first fill up, i squeezed through two auto shut offs and the 2nd time a bit of gas squirted out and ran all down the side of my car. since then i've always used the medium-to-slow flow and never ever go past the auto shut off. always fairly close to what's shown as gallons used, within .5 gallon i think.
3/15/13 | 11:20 AM
#10
Mach 1 Member
Joined: January 12, 2012
Posts: 1,041
Likes: 13
From: Suburbs of Dallas
DO NOT TOP IT OFF.
How many of you remember the big rubber boots on gas pumps to collect gas vapors? In case you haven't noticed, those are disappearing. The reason they are disappearing is because cars are now required to have this vapor collection system built into the car itself. If you top off your tank you run the risk of flooding this vapor collection system which damages the system by flooding the charcoal canister with gasoline.
It's not a safety risk per say, but it could cause you to fail safety and emissions tests if you have them. Not to mention you would have to put up with the smell of raw gasoline constantly coming from the back of your car.
How many of you remember the big rubber boots on gas pumps to collect gas vapors? In case you haven't noticed, those are disappearing. The reason they are disappearing is because cars are now required to have this vapor collection system built into the car itself. If you top off your tank you run the risk of flooding this vapor collection system which damages the system by flooding the charcoal canister with gasoline.
It's not a safety risk per say, but it could cause you to fail safety and emissions tests if you have them. Not to mention you would have to put up with the smell of raw gasoline constantly coming from the back of your car.
3/15/13 | 11:45 AM
#11
Post *****
Joined: December 14, 2007
Posts: 20,005
Likes: 4
From: State of Jefferson Mountains USA
DO NOT TOP IT OFF.
How many of you remember the big rubber boots on gas pumps to collect gas vapors? In case you haven't noticed, those are disappearing. The reason they are disappearing is because cars are now required to have this vapor collection system built into the car itself. If you top off your tank you run the risk of flooding this vapor collection system which damages the system by flooding the charcoal canister with gasoline.
It's not a safety risk per say, but it could cause you to fail safety and emissions tests if you have them. Not to mention you would have to put up with the smell of raw gasoline constantly coming from the back of your car.
How many of you remember the big rubber boots on gas pumps to collect gas vapors? In case you haven't noticed, those are disappearing. The reason they are disappearing is because cars are now required to have this vapor collection system built into the car itself. If you top off your tank you run the risk of flooding this vapor collection system which damages the system by flooding the charcoal canister with gasoline.
It's not a safety risk per say, but it could cause you to fail safety and emissions tests if you have them. Not to mention you would have to put up with the smell of raw gasoline constantly coming from the back of your car.
The overflow enters the vent tubes connected to the charcoal canister and ruins them.
3/15/13 | 12:35 PM
#12
Bullitt Member
Joined: January 24, 2013
Posts: 291
Likes: 0
DO NOT TOP IT OFF.
How many of you remember the big rubber boots on gas pumps to collect gas vapors? In case you haven't noticed, those are disappearing. The reason they are disappearing is because cars are now required to have this vapor collection system built into the car itself. If you top off your tank you run the risk of flooding this vapor collection system which damages the system by flooding the charcoal canister with gasoline.
It's not a safety risk per say, but it could cause you to fail safety and emissions tests if you have them. Not to mention you would have to put up with the smell of raw gasoline constantly coming from the back of your car.
How many of you remember the big rubber boots on gas pumps to collect gas vapors? In case you haven't noticed, those are disappearing. The reason they are disappearing is because cars are now required to have this vapor collection system built into the car itself. If you top off your tank you run the risk of flooding this vapor collection system which damages the system by flooding the charcoal canister with gasoline.
It's not a safety risk per say, but it could cause you to fail safety and emissions tests if you have them. Not to mention you would have to put up with the smell of raw gasoline constantly coming from the back of your car.
