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Old 06-23-2013, 02:54 PM   #21
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Re: How do you calculate gas mileage

1. Fill up tank with gas
2. Zero trip meter
3. Drive vehicle
4. Fill up tank with gas
5. Record gallons of gas from meter at pump.
6. Record miles traveled from trip meter
7. Divide miles by gallons (ex: 300 miles /20 gallons = 15 miles / gal)
8. Zero trip meter and repeat process.
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Old 06-23-2013, 03:00 PM   #22
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Re: How do you calculate gas mileage

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Originally Posted by WDEagle View Post
1. Fill up tank with gas
2. Zero trip meter
3. Drive vehicle
4. Fill up tank with gas
5. Record gallons of gas from meter at pump.
6. Record miles traveled from trip meter
7. Divide miles by gallons (ex: 300 miles /20 gallons = 15 miles / gal)
8. Zero trip meter and repeat process.

What he said, but also keep a running total of miles driven and gallons pumped.
Do the math on those totals.
Over time, you'll get far more accurate results.
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Old 06-23-2013, 03:23 PM   #23
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Re: How do you calculate gas mileage

Do you guys think you can turn this into a how-to?
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Last edited by RidinBaseline; 06-23-2013 at 03:28 PM.
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Old 06-23-2013, 03:24 PM   #24
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Re: How do you calculate gas mileage

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What he said, but also keep a running total of miles driven and gallons pumped.
Do the math on those totals.
Over time, you'll get far more accurate results.
Good idea
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Old 06-23-2013, 03:25 PM   #25
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Re: How do you calculate gas mileage

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do you guys think you can turn this into a how-to?
lol
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Old 06-23-2013, 03:37 PM   #26
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Re: How do you calculate gas mileage

You still have to fill the tank back to near full like it was when you started though.

Filling to full full then driving 200 miles and only pumping in a partial tank does no good for numbers displayed at the pump. Filling it until it clicks off then doing ones best to 'guess' where full was before is as accurate as you can get without an electronic device to read usage as it's driven. The Ultragauge and Scangauge will do that for you.
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Old 06-23-2013, 03:40 PM   #27
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Re: How do you calculate gas mileage

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Originally Posted by RidinBaseline View Post
Do you guys think you can turn this into a how-to?
Quote:
Originally Posted by WDEagle View Post
1. Fill up tank with gas
2. Zero trip meter
3. Drive vehicle
4. Fill up tank with gas
5. Record gallons of gas from meter at pump.
6. Record miles traveled from trip meter
7. Divide miles by gallons (ex: 300 miles /20 gallons = 15 miles / gal)
8. Zero trip meter and repeat process.
This IS the how-to. haha
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Old 06-23-2013, 03:43 PM   #28
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Re: How do you calculate gas mileage

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This IS the how-to. haha
I can do MUCH better than that. Can you say pictures and maybe a video?
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Old 06-23-2013, 03:49 PM   #29
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Re: How do you calculate gas mileage

I can see the video now. You at the pump filling the tank. Then you driving. Then you fill up AGAIN. the final scene is you with a calculator. EPIC! 4,783,702 views on youtube, I can see it now!
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Old 06-23-2013, 03:54 PM   #30
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Re: How do you calculate gas mileage

I still can't believe this was a serious question to begin with... let alone prompting a "How-To"
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Old 06-23-2013, 04:48 PM   #31
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Re: How do you calculate gas mileage

I used to use the fill-up method but unless you really keep track of stuff and fill the tank almost every time it doesn't work. Especially if you're like me and need to use your trip odometer for other purposes.

I use a free online website designed for big trucks called MyGauges.com. Uses a weighted average method so if you only partially fill your tanks it takes that into account.
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Old 06-23-2013, 05:14 PM   #32
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Re: How do you calculate gas mileage

I will be creating a how to of this soon equipped with video and all. You guys have inspired me!

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Old 06-23-2013, 06:16 PM   #33
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Re: How do you calculate gas mileage

Are your tires stock size? If not that will throw off the calculation.
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Old 06-23-2013, 07:27 PM   #34
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Re: How do you calculate gas mileage

Tire size previously stated.
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Old 06-23-2013, 07:36 PM   #35
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Re: How do you calculate gas mileage

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Tire size previously stated.
Ahh, Missed that. Guess I was too excited about his upcoming "HOW-2"
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Old 06-23-2013, 07:44 PM   #36
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Re: How do you calculate gas mileage

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I will be creating a how to of this soon equipped with video and all. You guys have inspired me!

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I dont really think a how to is needed for this. I mean really.....How do you calculate mileage?


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Old 06-23-2013, 08:24 PM   #37
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Re: How do you calculate gas mileage

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Old 06-23-2013, 08:25 PM   #38
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Re: How do you calculate gas mileage

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I dont really think a how to is needed for this. I mean really.....How do you calculate mileage?


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Old 06-23-2013, 09:22 PM   #39
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Re: How do you calculate gas mileage

Ok, if your tires are not stock the best way to calibrate for tire size is with a tune. But, if you can not get a tune, do you have a GPS?

Generally most manufacturers claim a 0.1MPH tolerance with speed readings, however will go as far to say a 0.5MPH inaccuracy is possible, to make allowances for any satellite signal variations beyond their control.

GPS speed calculations are more accurate than a speedometer. If you do not believe me, get a radar gun a GPS and a car speedo and check it out. I have, but with a bass boat, and the gps was accurate to .2 of the radar gun every time, on three different gps units. Furthermore, if the speed is accurate the measured miles on the GPS will be as accurate.

So if you have a section in your GPS that can record time and miles and speeds for a single trip you can use that to get a good idea of actual fuel mileage, by doing the same math as mentioned earlier, just divide the miles by the gallons. Iuse the GPS miles and the odometer mileage, and they are within 3 tenths of each other everytime. #/10ths over 345 miles is negligent in the math figures. Just one mans opinion.
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Old 06-23-2013, 10:41 PM   #40
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Re: How do you calculate gas mileage

lmao
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