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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Sun, Sep-12-2004, 09:59:29 PM   #1
M3samurai
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Default Gas Tank Capacity

My manual says my gas tank capacity is 16.4 Gal and once the light comes on I should have 2.1 Gal left in the tank. Most of the time I fill up the car when it's a 1/4 to empty. I always wanted to know how far I can get once the light comes on and I've gone as fas as 27 miles ( I know it's not good for the car) then when I fill up I've managed to get it filled with a max of 15.4 gal all the way up to the top as far as I can remember.

Recently because of negligence my red light came on and I just drove it for a while not too far and went to get it filled up at my favorite gas station I've always filled up there because the price is always lower than the others.
Well because of me wanting to check my gas milage and trying to find out how much gas I could get in the car I topped it off with 16.485 Gal and was concerned on why, because that meant my tank had to be bone dry and the light just came on and I had to have used less that 1/2 a gallon before the fill up.
Numbers didn't add up I assumed I had 1 1/2 gal left in the tank if I managed to fill up with 16.485 that would place me at 18 gal , assuming I can get 1 gal in the pipe before the tank that would be 17 gal.
Would the rest of gas be in the lines after the tank?
Is this possible, or do I have to turn in this gas station?
And No I did not spill any gas the pump prevents this.
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Old Sun, Sep-12-2004, 10:30:11 PM   #2
Sirius
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Taken from TIS:

16 11 Fuel Tank and Mounting Parts E36 Gasoline-driven cars

Tank volume/reserve ltr. 65/8


Or, 17.171183 gallons.

Not sure what that reserve is. I have been told at work its 17 gallons.

If you factor in the extra 8 liters, thats an extra 2.11 gallons... so who knows heh.

I have run the car down to where the 'range' reading on the OBC was reading ---, which means theres not enough gas in the tank to compute it, and I have never once gone over 17 gallons filling. Hit 16 a few times though.
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Old Sun, Sep-12-2004, 11:23:24 PM   #3
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---- - i thought when thats flashing on the OBC, ure running on vapour !
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Old Sun, Sep-12-2004, 11:25:57 PM   #4
Sirius
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It is, and its not healty to run the tank that low anyways.
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Old Mon, Sep-13-2004, 07:13:47 AM   #5
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Yeah, I think this gas station has it's pumps rigged, I might see who I should call to have them look into it. Because I know I was not running on vapor.

Anyways what I've always heard is that the reason that it's not good to get your tank that low is because of all the dirt accumulated at the bottom of the tank might get sucked in to the system.

I've also heard that running out of gas is really hard on your engine, why is that ?
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Old Mon, Sep-13-2004, 11:19:45 AM   #6
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Running low on gas is bad for the fuel pump, as it uses the gas to stay cool. Running low on gas will cause the pump to run hotter, which may lead to failure later.
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Old Tue, Sep-14-2004, 06:27:32 AM   #7
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Quote:
Originally Posted by Sirius
Running low on gas is bad for the fuel pump, as it uses the gas to stay cool. Running low on gas will cause the pump to run hotter, which may lead to failure later.
Yup.....Before I started paying much attention to the whole car care/mechanical maintenance stuff, I ran my 88 325i dry. Next week, fuel pump was done and needed a new one. Now I don't let it drop below 1/4 tank in the 325 or the M3.
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Discussing Gas Tank Capacity in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)