Go Back   EcoModder Forum > EcoModding > Off-Topic Tech
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 07-10-2008, 10:12 AM   #1 (permalink)
EcoModding Lurker
 
othergames's Avatar
 
Join Date: Jun 2008
Location: Pittsburgh, PA
Posts: 21

New Blue - '08 Honda Civic EX Sedan
90 day: 36.68 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Volume meter for gas cans?

I get my gas using my supermarket's discount program, so I buy the maximum 30 gallons every time by filling my tank and red 5-gallon gas cans.

I can easily calculate what goes INTO the cans by subtracting my car's fill-up volume from the 30-gallon total. But I put some of the gas from the cans into my wife's car between my fillups. This leaves me with estimates of the cans' actual contents. Anyone know how I can accurately gauge what I pour into my car when I'm not at the filling station, but rather in my garage?

If I have to, I can do the math at the pump and track the contents of each can as I fill them, then track which car they go into. The much lazier way is what I asked about above. Is there a home meter for this kind of situation?

__________________
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 07-10-2008, 11:26 AM   #2 (permalink)
Dartmouth 2010
 
SVOboy's Avatar
 
Join Date: Nov 2007
Location: Hanover, NH
Posts: 6,447

Vegan Powa! - '91 Honda CRX DX
Team Honda
90 day: 66.52 mpg (US)
Thanks: 92
Thanked 119 Times in 87 Posts
Send a message via AIM to SVOboy Send a message via MSN to SVOboy Send a message via Yahoo to SVOboy
You could do the filling in one can increments so you're always only putting in 5 gallons.
  Reply With Quote
Old 07-10-2008, 11:30 AM   #3 (permalink)
EcoModding Lurker
 
othergames's Avatar
 
Join Date: Jun 2008
Location: Pittsburgh, PA
Posts: 21

New Blue - '08 Honda Civic EX Sedan
90 day: 36.68 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
I thought of that too, but the cans aren't PRECISELY 5 gallons. This is probably the best way, though. At the pump I have to make sure I record what goes into my car, then fill up 3 5-gal cans with precisely 5 gallons each, then 30 - 15 - my fill up = the leftover in the 4th can.
__________________
  Reply With Quote
Old 07-10-2008, 12:01 PM   #4 (permalink)
Master EcoModder
 
Ryland's Avatar
 
Join Date: Jan 2008
Location: Western Wisconsin
Posts: 3,903

honda cb125 - '74 Honda CB 125 S1
90 day: 79.71 mpg (US)

green wedge - '81 Commuter Vehicles Inc. Commuti-Car

Blue VX - '93 Honda Civic VX
Thanks: 867
Thanked 433 Times in 353 Posts
get a scan gauge and once it's calibrated you are done.
  Reply With Quote
Old 07-10-2008, 12:39 PM   #5 (permalink)
Master EcoModder
 
wagonman76's Avatar
 
Join Date: Jun 2008
Location: Northwest Lower Michigan
Posts: 1,006

Red Car - '89 Chevrolet Celebrity CL 4 door
Team Chevy
90 day: 36.47 mpg (US)

Winter Wagon - '89 Pontiac 6000 LE Wagon
90 day: 28.26 mpg (US)
Thanks: 8
Thanked 17 Times in 16 Posts
Quote:
Originally Posted by othergames View Post
I thought of that too, but the cans aren't PRECISELY 5 gallons. This is probably the best way, though. At the pump I have to make sure I record what goes into my car, then fill up 3 5-gal cans with precisely 5 gallons each, then 30 - 15 - my fill up = the leftover in the 4th can.
I would put increment marks on the can with permanent marker, up to 5 gallons. Do this by starting with an empty can on a level surface and putting marks on as you reach every increment with the gas pump. It will make it easier to track how much you put into the car, just check the level when you set the can back down. Maybe even tie a scratch pad to the handle of the can.
__________________

Winter daily driver, parked most days right now


Summer daily driver
  Reply With Quote
Old 07-14-2008, 05:09 PM   #6 (permalink)
EV OR DIESEL
 
Join Date: Dec 2007
Location: South Louisiana
Posts: 1,748

FarFarfrumpumpen - '03 Volkswagen Jetta Wagon GLS Premium

Quorra - '12 Tesla Model S P85
Thanks: 57
Thanked 107 Times in 83 Posts
Send a message via AIM to dremd
Subscribed: I'm going to have to deal with this myself soon,

I'm thinking fill can with 1 gallon (trusting the pump accuracy) mark with permanent marker; repeat for 2- 5 gallons (maybe even 5.5 gallons)
__________________
2012 Tesla Model S P85
2013 Nissan LEAF SV totaled by now deceased intoxacated driver.
2012 Nissan LEAF SV
6 speed ALH TDI Swapped in to a 2003 Jetta Wagon
  Reply With Quote
Old 07-14-2008, 09:45 PM   #7 (permalink)
EcoModding Lurker
 
othergames's Avatar
 
Join Date: Jun 2008
Location: Pittsburgh, PA
Posts: 21

New Blue - '08 Honda Civic EX Sedan
90 day: 36.68 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
My gas cans were $8.50 apiece at Wal-Mart, and they have markers at each gallon as well as at the 5-gallon capacity level. They're not precise, I'm sure, but they're a good enough gauge.
__________________
  Reply With Quote
Old 07-14-2008, 09:53 PM   #8 (permalink)
EV OR DIESEL
 
Join Date: Dec 2007
Location: South Louisiana
Posts: 1,748

FarFarfrumpumpen - '03 Volkswagen Jetta Wagon GLS Premium

Quorra - '12 Tesla Model S P85
Thanks: 57
Thanked 107 Times in 83 Posts
Send a message via AIM to dremd
Quote:
Originally Posted by othergames View Post
My gas cans were $8.50 apiece at Wal-Mart, and they have markers at each gallon as well as at the 5-gallon capacity level. They're not precise, I'm sure, but they're a good enough gauge.
Mine are not even close (old cans) I put ~6.5 gallons if I fill to the 5 gallon line.

BUT if anyone needs a cheap gas can; Sams club has 6 gallon rated cans for 4.8x each. May just be to hurricane prone areas though, because it was in the hurricane preparedness area. . . . .
__________________
2012 Tesla Model S P85
2013 Nissan LEAF SV totaled by now deceased intoxacated driver.
2012 Nissan LEAF SV
6 speed ALH TDI Swapped in to a 2003 Jetta Wagon
  Reply With Quote
Old 07-15-2008, 01:39 AM   #9 (permalink)
EcoModding Lurker
 
Join Date: May 2008
Location: Central New Mexico
Posts: 18

Bun - '02 Ford Focus ZTS
90 day: 31.3 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
I think I've got the Rube Goldberg solution here!

1. Measure the specific gravity of your gas. It may vary about +-5% according to wikipedia.
2. Weigh your gas can.
3. Fill vehicle.
4. Weigh gas can again.
5. Subtract line 4 from line 2.
6. Divide line 5 by line 1.

Staples has a $130 pediatric scale with 44lb capacity and 10 g resolution. 20 gram accuracy would mean an error of at most 29 mL or .0077 gallons.
  Reply With Quote
Old 07-17-2008, 01:33 AM   #10 (permalink)
A madman
 
brucey's Avatar
 
Join Date: Mar 2008
Location: WV
Posts: 1,012

Pequod - '17 Subaru Outback
90 day: 22.79 mpg (US)
Thanks: 70
Thanked 179 Times in 96 Posts
Send a message via AIM to brucey
Wasn't this problem a puzzle on a die hard movie?

The simplest way I say is just measure how much you put in the can according to the pump, it might not be 5 gallons exactly, but it should be close.

I also second the scangauge. Mines 99% accurate after only one fill up.

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
My fuel meter - first results... JohnnyGrey Instrumentation 8 05-04-2008 10:35 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com