Stupidest question in history?

This is probably the stupidest question ever asked 😂
Why is it possible to fill up to 300litres in strategy and save it? Next time I enter strategy the fuel is adjusted to 239litres

If you have anxiety about not reaching the end of the race with a normal fuel load xD

That's so you can do 2 wet races in a row on PL5 with low fuel stat lol. jokes.. i have no idea why that is even needed. 

Because there is a giant leak in the fuel tank at the point where it reaches exactly 239 liter