Amount of fuel in tank

**squala** · June 15th, 2005 12:46 AM

Which is better? I'll point out the drawbacks of both.

More Fuel
- more weight, which means slower acceleration and less efficiency (on fuel, brakes, tires, etc.)

Less Fuel
- Fuel pump works harder (I think).
- More contaminants enter the system.
- The thing about free air volume (less is said to better).

Having said that, perhaps the best thing to do is to keep the tank between 3/4 and 1/4 full. Any other insights are welcome.

**mbt** · June 15th, 2005 01:04 AM

any performance benefits to having less fuel in the tank (due to reduced weight, and which would probably be not-too-significant anyway) will be offset by the inconvenience of having to fill up more often hehe :D at least for me

**1D4LV** · June 15th, 2005 10:50 AM

i really don't think having it always below half full is really harmful to the fuel pump. ang masama is yung parati kang natutuyuan and nauubusan.

i would go for mbt's reason... the inconvenience of having to fill up everytime you need to is the main reason.

**orly_andico** · June 15th, 2005 06:26 PM

not to mention... 55 liters of gas (full tank) is only 55 kilos at most (but gasoline is less dense than water, so it's less than 55 kilos). versus say 1000 kilos for the net vehicle weight. 5% increase lang ng full tank vs. empty tank.

**squala** · June 15th, 2005 10:23 PM

If I can remember from my science classes, water has zero density.

As for the 5% weight increase, that's a lot even if it sounds too little. Even just 1 hp is a lot (think aircons).

Perhaps we just have to maintain some sort of Goldilocks amount of fuel on-board, not too full or too empty, just right.

**pixelparadigm** · June 15th, 2005 10:45 PM

How about not less than 1/4 and not greater than 3/4 tankful of fuel?

Most of the time I just keep it between 1/2 and 1/4 full. I just fill my tank full when it's cold.

**squala** · June 16th, 2005 02:10 AM

You should be doing fine there, but the first one will lessen your visits to the station. ;)

**jnqlz** · June 16th, 2005 02:44 AM

the best is to keep your tank enough load of gasoline...........for traffic n fun

**mbt** · June 16th, 2005 03:54 AM

density of pure water is approximately 1.0 g/cc, not zero hehe :D

**geebunny** · June 16th, 2005 09:40 AM

For me, full tank to the brim then wait till the gas indicator lights up then full tank again. But I make it sure that the next gas station is less than 40 kms. away para hindi matuyuan.