Master Cycle Zero
The Master Cycle Zero is an item that Link acquires in Breath of the Wild as part of The Champions' Ballad. It closely resembles a motorcycle, but is adorned in many Sheikah markings. It is the reward given for defeating Monk Maz Koshia, the boss of the final Divine Beast.
The Master Cycle Zero has a fuel gauge located above the standard Temperature and Sheikah Sensor gauges when summoned. It has several tick marks showing the fuel level at intervals every quarter of a tank and at empty and full. To refuel the bike, Link must add a combination of five various materials by holding them and interacting with the bike. Different materials fill the tank up by different amounts with the more common materials filling the fuel gauge up quicker, and a select few materials applying a 2x multiplier to the fuel worth which is stackable. For example, each piece of Wood added fills up 10% of the tank per piece, with five pieces filling up the tank halfway. If Link substitutes a piece of Wood for a Monster Extract, which is worth 1% of a tank plus a 2x modifier, the total amount of fuel added becomes 40% plus 1% , all multiplied by two, so 82% of the tank filled.
Each material falls into a category of how much fuel a single material provides, as given by this comprehensive chart.