For subscribers
Torque Shop: The case for a tank half empty
Sign up now: Get ST's newsletters delivered to your inbox
Fill 'er up: Go with a full tank by all means, but stop when the fuel nozzle's auto cut-off kicks in.
ST PHOTO: LIM YAOHUI
Shreejit Changaroth
Follow topic:
A fuel tank filled to the brim will not increase fuel flow to the engine. This is controlled by the injection system, which is mostly determined by your right foot.
The evaporation theory is also flawed because petrol lost to the atmosphere is insignificant and is not a function of the volume in the tank.

