LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Ls400 how many fuel gallons left in the tank?

Old 04-10-09, 10:00 AM
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qewani1
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Default Ls400 how many fuel gallons left in the tank?

here is a photo,



so how many fuel gallons left in the tank?
Old 04-10-09, 10:09 AM
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LiCelsior
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about 2 gallons or so.
Old 04-10-09, 10:22 AM
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Kansas
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About three gallons are left when the low fuel light comes on in my 2000 LS400. At least in my car, the "miles until empty" function in the trip computer seems to be extremely accurate.

I did a quick check of my log book and saw that the longest distance I've travelled between gasoline refills during the past six years has been 492 miles. That time I added 18.4 gallons so I had about 3.5 gallons of the total 21.9 gallon tank capacity left.
Old 04-10-09, 10:59 AM
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jcrome04
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yeah It's about 3gal


The tank capacity is 22.5gal i thought.
Old 04-10-09, 11:13 AM
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Kansas
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Originally Posted by jcrome04
The tank capacity is 22.5gal i thought.
The tank capacity is 21.9 gallons in qewani1 and my 2000 LS400's due to the capacity being slightly reduced due to "on-board refueling vapor recovery" being added for the 2000 model year.

You can read about ORVR here: http://en.wikipedia.org/wiki/Onboard...vapor_recovery
Old 04-10-09, 12:18 PM
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qewani1
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Kansas your MPG is it 22.4 ?
Old 04-10-09, 12:33 PM
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22.5 is for the 89-94 years, i think thats the highest capacity for all LS models
Old 04-10-09, 12:45 PM
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Originally Posted by qewani1
Kansas your MPG is it 22.4 ?
I'm not sure I understand your question.

On the one tank full of gasoline I mentioned, the calculated gas mileage was 26.7 miles per U.S. gallon (492 miles / 18.4 U.S. gallons = 26.7 mpg). This was on a highway trip where all except about 20 miles was driven at 65-70 mph with the speed controlled by the cruise control.

Calculated gas mileage on only one tank full of gas is often not very accurate. In this case 26.7 mpg really is a good reflection of the typical miles per gallon my car gets at 65-70 mph in low wind conditions on fairly level roads.
Old 04-10-09, 01:36 PM
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jcrome04
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Originally Posted by kosi718
22.5 is for the 89-94 years, i think thats the highest capacity for all LS models
it is 22.5 gal up to 2000. . .
Old 04-10-09, 07:13 PM
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I usually have about 4 gallons left when the light comes on. I have a 96.
Old 04-10-09, 07:50 PM
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as Kansas noted, 89-99 where all 22.5gal
2000 was 21.9gal.
Old 04-14-09, 03:01 PM
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qewani1
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using fuel type 98 octan does it improve MPG?
Old 04-14-09, 08:41 PM
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damon
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For my 94 I generally try to use 30 miles from the time the warning light is triggered as my rule. I do not wish to suck crap off the bottom of the tank if I can help it.

I have never had a fillup over 20 gallons following this procedure.
Old 04-14-09, 10:17 PM
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Cool

There's a reason why those lights are called idiot lights. Drivers who wait until they come on before refueling, well ... By the time that light comes on, it's too damned late, you've become a bottom feeder, you're already sucking all that **** off the bottom. The light is there to prevent mindless drivers from running out of fuel and getting stranded. Don't forget, the less fuel you have in the tank, the more air you have. The more air, the more condensation. In the winter, you can freeze up the lines like this.

There are 2 reasons I can think of for this lunacy. One is the driver is wating for the hypnotic message coming from the light. Maybe HAL is in there controlling things? The other is the famous Seinfeld Syndrome. This is where the driver gets a prolonged adrenaline rush from pushing the limits to see how far they can go on a tank of gas. The lower the needle, the more the adrenaline. Just like Kramer and Newman.
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