How to calculate MPG during a partial fill
I was running on E and was starting to get nervous about driving so I put in two gallons of gas instead of filling up. Now, how do I calculate my MPG after I fill up? Thanks!
- Aaron How-To: When you do a partial-fill (meaning you didn't fill the tank, e.g. you only put in a few gallons) keep the odometer running and when you finally do fill up, add the gallons from the partial-fill to the full tank. If you put in two gallons then later fill with 10, add those two gallons to the fill-up to get a total of 12 and use that in your MPG calculator. |
Just add the two gallons to whatever you put in later to fill the tank. (??)
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dont reset your trip and make note of how many gal you added than add the gal to youro fill up
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But wouldn't that assume that I used two gallons by the time I fill-up? I was thinking more of finding out how much gas each mile uses and using that in some sort of equation?
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It all works out, just add your part fill to next full fill, even if 5 of them, you'll get a high tank, but average mpg will work out, kind of like 3 tank MPG. You could put in th 2 gallons and tip OD and reset trip and it would all average out, but give crazy high tank MPG.
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get a scangaugeII. :thumbup:
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Quote:
What you already used up, you'll need to add again when topping up. What's left in the tank, you won't need to add again :) Keep the miles counter running until you fill up completely, and add the previous 2 gal to the volume you tanked - done. |
Alright, it's starting to click in my head. So just to be clear, if the next time I fill up I pump 10 gallons, I want to add the previous two gallons to that correct? I'll have a total of 12 gallons that I will use to determine MPG for that tank right? I use the total OD mileage. Thanks!
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yes just make sure you dont reset your trip untill you fill completely
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Excellent, thanks!
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