Inaccurate Gas Pump?

[MPGomatic]

Originally Posted by Old Mechanic

The wife's Murano would auto shut off the pump, but I could easily trickle another 2.5 gallons in the tank, listening to the gurgling noise until it got to the filler neck. Never go to the top of the filler neck or you could saturate the charcoal in your vapor recovery tank. For that reason, I just fill until the pumps auto stop on slow speed and leave it at that.

Are Jersey gas pumps still attendant only?

Yerp! Still attendant only. Some of the cheapest gasoline in the USA (tax per gallon is low) and we don't have to get out of the car when the weather's nasty. They tax the daylights out of us on everything else.

Jersey Girls Don't Pump Gas.

[IamIan]

Of course .. sometimes the pump is way off and some states are not as big on enforcement .. some states don't allow liability to attach .. and some states even have a maximum $ fine per year .. once a pump owner knows they've reached the maximum , they are immune to any further fine , no matter how off pumps are for the rest of that year ... etc.

For example:

Link

Annual caps are $5,000 per pump and $50,000 per operator. An operator with more than 100 stations in Arizona, such as Circle K, could be fined a maximum of $50,000.

Only getting around to check each pump once every 3 years .. and than finding for example 6 pumps off by up to 200 cubic inches out of 231 cubic inch test .. = .. an ~86% pumping error .. and that ~86% error pump got between $300 to $500 fine ... I think the gas station made out more $ over that 3 years than the cost of the fine.

From 2007 to 2008 Arizona only issued citations if the pump was off by 6 cubic inches out of 231 .. = roughly a ~2.59% error rate ... If it was only ~2.58% error = no fine = keep on pumping less gasoline than you charge the customer for.

[MPGomatic]

Originally Posted by Old Mechanic

Gas tanks under the rear seat are not very "tall' at all. With a filler neck 3 feet long and not coming in at the very top of the tank, the level of the car is critical.

UPDATE: 200 miles and the needle is just starting to fall below Full. I reckon you're spot on Mech!

Back to the original pump (after another 200 miles or so).

[BabyDiesel]

I always go to the same pump at the same place facing the same direction with the car in the same spot. This reduces variability

[MPGomatic]

Originally Posted by BabyDiesel

I always go to the same pump at the same place facing the same direction with the car in the same spot. This reduces variability

Yep! That is my usual modus operandi, although I switch from brand-to-brand, I run as many fills in one spot as possible. I've never seen such a huge variation. Big lesson, I learned.

[BabyDiesel]

Originally Posted by MPGomatic

Yep! That is my usual modus operandi, although I switch from brand-to-brand, I run as many fills in one spot as possible. I've never seen such a huge variation. Big lesson, I learned.

Yep! I learned very early in my Ecomodding newbness that the slope at the gas pump has huge effects on filling. On my 3rd or 4th tank ever recorded, I was screwed out of a 44+ mpg fill due to going somewhere else! I got a measly 42.

[Fat Charlie]

It made your next tank look pretty good, though.

[BabyDiesel]

Originally Posted by Fat Charlie

It made your next tank look pretty good, though.

THAT is true

[cosmick]

The cheapest station in this area is a major chain, but always cheats enough to notice. I decided it is not worth the few cents per gallon.
The one place that never pumps more than my tanks are factory rated to hold is owned and managed by an old guy who attends the same church I do. So if he's a couple cents per gallon more, fine by me.
When I travel, I only buy from big chain truckstops on the outskirts of major cities, just off the main interstates. Never pumped more than the tanks' ratings at any of them, that I can recall.

[MPGomatic]

Originally Posted by Fat Charlie

It made your next tank look pretty good, though.

Slambo's next tank is gunna be huge …