Using of fuel type in a rented vehicle?

So you could be certain what type of fuel the rented vehicle uses, the outside part of the fuel tank has a sticker with the needed fuel type. For added visibility there is also a factory mark on the inside part of the fuel tank cap. For even better visibility it is also stated on the car key chain.

Advice 1: It is always necessary to put more than 10 litres of fuel so the vehicle can register the new fuel level.

Advice 2: Always make sure the engine is turned off when charging fuel.