Gas Tank - Those Last 2 Gallons
02-23-2018, 07:07 PM
#41
Burning Brakes
Thread Starter
However we know that overfilling a tank can cause liquid gas to get into the charcoal canister, rather than gas fumes which it was designed to handle. Because of this danger, I would not re-fill to the brim just to get accurate mileage calculations. (at least not any more).
In any case, I am happy to get some "range" with the car considering I came from a VW TDI. I totally hate stopping for gas.
02-23-2018, 07:12 PM
#42
Burning Brakes
Thread Starter
From my 2017 RDX manual: Comes on when the fuel reserve is running low (approximately 2.5 U.S. gal./9.2 Liter left). I cannot remember seeing a light come on and I may have missed it. I'll check for it the next time,
02-24-2018, 09:12 AM
#43
Rick, I do not fill to the brim till it stays there. I fill and it slowly makes it down to the tank. By slowly, I mean I cannot keep the pump lever on in the "full on" position.
In any case, I am happy to get some "range" with the car considering I came from a VW TDI. I totally hate stopping for gas.
In any case, I am happy to get some "range" with the car considering I came from a VW TDI. I totally hate stopping for gas.
02-27-2018, 12:05 AM
#44
Touring
02-27-2018, 03:14 PM
#45
Burning Brakes
Thread Starter
I did two days ago. It turns on at the first white line above the red one.
Last edited by Tech; 02-27-2018 at 03:27 PM.
02-27-2018, 03:19 PM
#46
Team Owner
But the real question is... did you stop overfilling your tank?
02-27-2018, 03:26 PM
#47
Burning Brakes
Thread Starter
02-27-2018, 03:27 PM
#48
Latent car nut
iTrader: (2)
Join Date: Jan 2017
Location: Southern New Hampshire
Age: 68
Posts: 7,845
Received 2,005 Likes
on
1,407 Posts
02-27-2018, 03:31 PM
#49
Burning Brakes
Thread Starter
02-27-2018, 03:33 PM
#50
Latent car nut
iTrader: (2)
Join Date: Jan 2017
Location: Southern New Hampshire
Age: 68
Posts: 7,845
Received 2,005 Likes
on
1,407 Posts
02-27-2018, 03:53 PM
#51
Burning Brakes
I think now that the OP knows when he has 2.5 gallons remaining, he can fill the tank with max capacity minus 2.5 gallons or so. Depending on sensitivity, gas station pumps can click off prematurely, so milking the pump doesn't necessarily mean the tank was overfilled.
02-27-2018, 03:56 PM
#52
Latent car nut
iTrader: (2)
Join Date: Jan 2017
Location: Southern New Hampshire
Age: 68
Posts: 7,845
Received 2,005 Likes
on
1,407 Posts
I think now that the OP knows when he has 2.5 gallons remaining, he can fill the tank with max capacity minus 2.5 gallons or so. Depending on sensitivity, gas station pumps can click off prematurely, so milking the pump doesn't necessarily mean the tank was overfilled.
02-27-2018, 07:22 PM
#53
Burning Brakes
Thread Starter
I've had it click off and the tank isn't even close to full.
Anyway, I'll let you all know in 15 years which is as long as I had my CR-V and it never did a single thing to the evap system, in fact not a single component failed on it ever.
02-27-2018, 07:28 PM
#54
Latent car nut
iTrader: (2)
Join Date: Jan 2017
Location: Southern New Hampshire
Age: 68
Posts: 7,845
Received 2,005 Likes
on
1,407 Posts
From an engineering perspective, utterly irrelevant. Why? We say, "You cannot prove a positive with a negative." The fact is, you are overfilling your tank. I'll leave it at that.
The following users liked this post:
TacoBello (02-28-2018)
02-28-2018, 05:00 AM
#55
My wife's 11 Pilot has a consistent tendency at fill-up to trip the pump off early if the nozzle is inserted all the way in, as far as it will go. At the point of the "1st" pump trip...the tank is a couple gallons shy of the fuel gauge reading "full." When it does this, I just re-position the nozzle and allow the pump to fill till it trips a 2nd time. When the pump trips the 2nd time...there's no visible foaming or other sign of overfilling and the fuel gauge needle is squarely on "F."
The 1st time I filled my wife's recently purchased 13 RDX...it did the same thing. I do not know if it's going to do this consistently like her Pilot, because I haven't filled her Acura up since and she's not complaining..."this car doesn't go very far on a tank of gas."
The 1st time I filled my wife's recently purchased 13 RDX...it did the same thing. I do not know if it's going to do this consistently like her Pilot, because I haven't filled her Acura up since and she's not complaining..."this car doesn't go very far on a tank of gas."
Last edited by jjrphs; 02-28-2018 at 05:06 AM.
02-28-2018, 08:16 AM
#56
Wow, this thread should be elevated to the level of a lesson in English semantics, grammar, especially how we should use the term “mileage “. I for sure have gotten more mileage from this thread. 
.
.
The following users liked this post:
bmllr8 (03-02-2018)
02-28-2018, 08:18 AM
#57
Senior Moderator
02-28-2018, 09:29 AM
#58
Team Owner
You know you're utterly lazy, when you need to cram that extra gallon into your car because you don't want to fill up a day or two sooner, knowing full well you might be doing damage to your car 
02-28-2018, 09:56 AM
#59
Senior Moderator
guys...15 YEARS... in 15 years, you know how much time he saved by not going to the gas station a day earlier?!?
Spoiler
02-28-2018, 01:26 PM
#60
Burning Brakes
That said, I've found considerable variability at different gas stations, and differences when my car is aimed uphill or aimed downhill. I found this video helpful in explaining how a pump knows when to click off:
https://auto.howstuffworks.com/fuel-...-full-tank.htm
A worn diaphragm, different positions of the pin-hole, humidity, all affect when the pump will click off. Good engineers will design in a margin of error; meaning one or two pumps after a click won't hurt. Knowing this, I still stop after the first click unless the station I know is a big offender (1 to 2 gallons under-fill). It's not so much that I want to maximize range or visit the gas station less; 1 to 2 gallons under-fill seriously screws up my mpg calculations.
03-10-2018, 10:36 AM
#61
You're really not supposed to keep filling after the nozzle clicks off (unless you're using a particularly sensitive one). There's expansion space built into the tank and the evaporative emissions system. If you add too much fuel there's no place for it to go but into the charcoal canister and vacuum tubing. If that happens you could wind up replacing some expensive parts at worst or dealing with error codes at least.
If you think the nozzle(s) at your normal gas station are too sensitive, try another place just to see if you take on more fuel after the low fuel warning light comes on.
Cheers!
If you think the nozzle(s) at your normal gas station are too sensitive, try another place just to see if you take on more fuel after the low fuel warning light comes on.
Cheers!
Thread
Thread Starter
Forum
Replies
Last Post
Stew97CL3.0
1G CL (1997-1999)
17
02-06-2006 09:43 PM