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Old 10-20-2008, 12:37 PM   #21 (permalink)
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For "free miles" I just go by what I was always getting before I started here, which was 29 to work and back, and 32 downstate and back. EPA for my car is 21 combined, and the only time I would get that was when I had a stuck open thermostat in the middle of winter, or some other mechanical problem. I dont consider it free miles if I never really got that low to start with.

However the wife is pretty good at getting EPA mileage. Trying to convince her how to do better.

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Old 10-20-2008, 12:47 PM   #22 (permalink)
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wagonman,

I also got better than EPA before I started ecomodder but for referring my stats to lay-people not associated with ecomodder (who probably don't get much better than EPA and might not even know what EPA means) I was including total free miles over EPA.

I've been touting ecomodder to anyone that will listen and have two people at work trying it on their vehicles (P&G, higher psi, etc.) and they are seeing some improved results although I think only 1 of them actually tracks their fuel consumption on the site. I actually have an appointment with a friend of mine this week to take him out driving in his toyota tacoma to show him some P&G.
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Old 10-20-2008, 12:51 PM   #23 (permalink)
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Matt -

Quote:
Originally Posted by Matt Herring View Post
daycfg... i cant take credit for the pov ecause it was motivated by another ecomodder but i will take credit for the term free miles...i think it puts it in laymans terms and really makes people think about what 1000 or 2000 or 5000 free miles means to them. it might be 50 freetrips to work or 20 free trips to taking their kids ack to college after holidays. whatever it means to them...its personal and i think it means mora than percent over epa to someone not fully comitted to what we do every day. dayday
Hrmmmmmm, let me redo this. Putting my calcs into the "free miles" POV :

New (Ecomodder) MPG : 40+
New fill-up Miles : 40 MPG * 5.5 gallons = 220 Miles

Old (pre-Ecomodder) MPG : 30+
New fill-up Miles : 30 MPG * 5.5 gallons = 165 Miles

220 miles - 165 miles = 55 free miles per tank.

---------------

Now, let's look at a year. I project about 20,000 miles this year :

20,000 Miles / 40 MPG => 500.00 Gallons
30 MPG * 500.00 gallons = 15,000 Miles
20,000 Miles - 15,000 Miles = 5,000 FREE Miles per year.

Orrrrrrrrrr, to make a short story long, for every 3 miles I drive, I get one mile for free, .

CarloSW2
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Old 10-20-2008, 01:47 PM   #24 (permalink)
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cfg...

For every 160 miles you drive you get 60 "for free" based on being 60% over epa. If you drive 20,000 miles a year then you take that number divided by 160 miles and get 125. Then multiply 125 x 60 free miles and you get 7500 free miles. Check my math but I think I'm correct (maybe)?
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Old 10-20-2008, 06:24 PM   #25 (permalink)
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My fuel log is telling me that I'm near the max I can get out of the truck. The good news is that the mods and driving are robust and I stay within a 3 MPG range most of the time.
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Old 10-20-2008, 07:35 PM   #26 (permalink)
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My fuel log told me that using Lube Control FP Plus helps my gas mileage.
Don't use it MPG went down at least 1 mpg.
My fuel log also told me that a gas station by me had changed suppliers and I noticed in two tanks that I should not use their gas anymore.
Went back to name brand Exxon and Sunoco and I get top gas mileage again.
Never would have known if I hadn't started writing down my fills and miles and getting my mpg per tank.
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Old 10-20-2008, 07:48 PM   #27 (permalink)
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Matt -

Quote:
Originally Posted by Matt Herring View Post
cfg...

For every 160 miles you drive you get 60 "for free" based on being 60% over epa. If you drive 20,000 miles a year then you take that number divided by 160 miles and get 125. Then multiply 125 x 60 free miles and you get 7500 free miles. Check my math but I think I'm correct (maybe)?
7,500 is about right. In my pre-Ecomod days I was already averaging 30+ MPG (which matches the old EPA standard), so that is my personal benchmark. But let's plug in the EPA standard with more exact numbers :

New (Ecomodder) MPG : 41.92 (lifetime Ecomodder-MPG)
New fill-up Miles : 41.92 MPG * 5.5 gallons = 230.56 Miles

New EPA MPG Standard for my car : 27
EPA fill-up Miles : 27 MPG * 5.5 gallons = 148.5 Miles

230.56 miles - 148.5 miles = 82.06 => ~82 free miles per tank.

This means that for very tank (on average), I get at least on free commute to/from work.

---------------

Now, let's look at a year. I project about 20,000 miles this year :

20,000 Miles / 41.92 MPG = 477.099 => 477 Gallons
27 MPG * 477 gallons = 12,879 Miles
20,000 Miles - 12,879 Miles = 7,121 FREE Miles per year.

Hee hee, I just gained 2000 miles from my previous calc, . I like to low-ball my benefits so that I am not exaggerating when I tell non-Ecomodders, but it's good to crunch the numbers now and then.

CarloSW2

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