Full tank indicator

[WeeYari]

First click is the closest to published fuel capacity.

If you fill to first click every time, and properly divide distance traveled by fuel top up amount, there is no way your calculations can be off. The only variable in the equation would be the sensitivity of the shut off on the gas pumps. That is why for truly accurate calculations it is recommended to, as much as possible, use the same station, same pump whenever filling the tank.

[nookandcrannycar]

Originally Posted by WeeYari

First click is the closest to published fuel capacity.

If you fill to first click every time, and properly divide distance traveled by fuel top up amount, there is no way your calculations can be off. The only variable in the equation would be the sensitivity of the shut off on the gas pumps. That is why for truly accurate calculations it is recommended to, as much as possible, use the same station, same pump whenever filling the tank.

There have been some past threads, which IIRC included CTScott weighing in on this, indicating that there are some things that can cause 'the click' to not happen at the same point/place every time.

[WeeYari]

Originally Posted by nookandcrannycar

There have been some past threads, which IIRC included CTScott weighing in on this, indicating that there are some things that can cause 'the click' to not happen at the same point/place every time.

While true, out of 479 fill-ups with this car, I've only had one instance where the first click shut off was blatantly early. Does shut off occur at exactly the same point every time? Certainly not, but based on my ongoing calculations, the discrepancy between pumps is acceptable for monitoring mpg.

BTW, I really only record mileage for purposes of monitoring condition of the vehicle, not for trying to milk every km/liter out of this thing that I possibly can so small errors in calculations don't phase me.

[island_Vitz]

Originally Posted by WeeYari

While true, out of 479 fill-ups with this car, I've only had one instance where the first click shut off was blatantly early. Does shut off occur at exactly the same point every time? Certainly not, but based on my ongoing calculations, the discrepancy between pumps is acceptable for monitoring mpg.

BTW, I really only record mileage for purposes of monitoring condition of the vehicle, not for trying to milk every km/liter out of this thing that I possibly can so small errors in calculations don't phase me.

Okay cool. I work on the road so I have to milk every km/litre
Been getting like 25mpg. This job has made me change my driving style and I'm now running my tyres at 41psi

[nookandcrannycar]

Originally Posted by WeeYari

trying to milk every km/liter out of this thing that I possibly can

Yeah, I must admit I probably do that quite often (miles rather than kilometers of course). I don;t like having to hand over more money than necessary to 'the gas man' .