LET’s DISCUSS!! Does This Strategy Truly Reduces Fuel Consumption In Generators?

Sincerely, it’s very necessary that we address this.

Nigerians are fond of doing things without actually finding out if it is real or pure cruise.

Even though I am also of the habit of opening my generator tank halfway as seen in the picture below but then, this thing may be wrong from a mechanical point of view.

Well, I would like to hear from you guys 

Does This Strategy Truly Reduces Fuel Consumption In Generators?