Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - is it true that a full tank gives better mileage?

Doofus McFancypants · 09-11-2008, 01:12 PM

I do not have as much data to date studing my daily commute relative to tank level - but i would find it hard to believe that the vapors are escaping to anywhere in a sealed tank - Is there some vapor loss when you insert the nozzle to refill? is that quantity measureable?

I don't know.

As for your item #2 - Maybe it is just me - but if i see the tanker truck at the station unloading more fuel - I skip the fueling and get it later. There may be no truth to it - but that is what i do.

Item #4 - I have found that filling it on SLOW seems to work better for my car - maybe it is how the pipe is bent - but on HIGH flow it will click itsself off Way Early.

#1 has been discussed before and I don't think it impacts my tanks too much - Although the majority of my fills are about the same time of day ( on way home from work) so if there was a differance - my tank to tank variation would be small in my data.

Steve

09-11-2008, 01:12 PM	#20 (permalink)
Doofus McFancypants Eco Noob Join Date: Jan 2008 Location: Tosev 3 - Atlanta GA Posts: 293 Red Rover - '01 Nissan Altima GXE 90 day: 30.07 mpg (US) Thanks: 5 Thanked 7 Times in 5 Posts	I do not have as much data to date studing my daily commute relative to tank level - but i would find it hard to believe that the vapors are escaping to anywhere in a sealed tank - Is there some vapor loss when you insert the nozzle to refill? is that quantity measureable? I don't know. As for your item #2 - Maybe it is just me - but if i see the tanker truck at the station unloading more fuel - I skip the fueling and get it later. There may be no truth to it - but that is what i do. Item #4 - I have found that filling it on SLOW seems to work better for my car - maybe it is how the pipe is bent - but on HIGH flow it will click itsself off Way Early. #1 has been discussed before and I don't think it impacts my tanks too much - Although the majority of my fills are about the same time of day ( on way home from work) so if there was a differance - my tank to tank variation would be small in my data. Steve __________________ Steve - AKA Doofus McFancypants ------------------------------ "If there's a new way, I'll be the first in line - But it better work this time" First Milestone passed - 30 MPG (city) 5/15/08 Best City Tank - 8/31/09- 34.3 MPG (EPA= 20) Best Highway Tank - 5/20/09 - 36.5 MPG (EPA= 28) ------ In effort to drive less: Miles NOT driven in 2009 = 648 (Work from home and Alt Transporatation)