Quick, easy way to check OBC for accuracy...

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#1
Here's, a quick, easy way to check the "range" function of your OBC for accuracy.

Okay, so, my last tank of gas lasted me 518 miles. I usually start to think about filling up at 400, so that was pretty special. I was excited.

I was driving my car last week with the intent to break the 500 mile mark on that tank before gasing up. So, I did that, then I didn't have a chance to get gas between then and Sunday morning.

Sunday morning, I go out to my car with the intention of driving out to the cheap gas station before I go to church. I get in my car, and turn it on. Everything's pretty normal.

Then it kind of stutters at idle. Hmm, that's weird. I give it a bit of gas and it comes back fine. I check the range function. It says I have 20 miles left, so there's no way I'm out of gas now. I back out of the parking space. The car has noticeably less power than usual just backing out of the space. Hmm. I pull out on to the road. Car goes, "bump bump badump bump bump." Well, this is neat. I'm flooring it in 2nd gear, and I can't get above 2500 RPM or 15 MPH.

Well, it was all very exciting, I barely made it the 100 yards down the road to the expensive gas station. Luckily the two lights I had to go through were green. I put 20.9 gallons in. I usually put in 18-19 when I fill up. It was raining, too. That's pathetic fallacy, for you literate types.

But now I know the range function on my OBC overspeculates by about 20, and I can't trust it under about 40 miles. You know, overspeculation is what caused the stock market crash in 1929, ergo the Great Depression. Parallels? I think yes.

I don't usually let it get bellow 40, but my brother lets his get down to 4 or 5 sometimes. He likes to live on the edge. It's 6 am and I should be studying quantum mechanics for a physics final in 3 hours, but instead I'm telling the world about how I nearly ran out of gas. Sweet.
 

Big Daddy

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#2
The miles until empty is an average of your MPG during the last fillup. Also remember running your car out of gas or very low on gas is harming your fuel pump. The gas in the tank surrounding your pump is what cools it.
 
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Location
Tennessee
#4
Big Daddy said:
The miles until empty is an average of your MPG during the last fillup. Also remember running your car out of gas or very low on gas is harming your fuel pump. The gas in the tank surrounding your pump is what cools it.
I realize all that. Like I said, I usually don't run it down, but I saw that I could make 500, and, you know...
 


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