Heya,
The petrol generator doesn't need any fuel except at recipe creation, it works as a low 'infinite' (40 petrol counts right?) power source over day/night.
The Large backpack has the most inventory space, but is lacking in a good equipment size and defensive resistances.
Later armours gain more inventory size (+ 10 each tier, generally), aside from the combat specialized armours which have less gain, but the trade off is near invulnerability to acid/poison or fire/blast.
