Dual Fuel Reservoir

The Dual Fuel Reservoir is a treasure in Pikmin: The Winds of Light that is found in The Summoning Garden. It is a package of 2 C2 Energizer batteries typically found with HESS Trucks.

Strategy
Since the Pikmin can't die on Day 1, you can attack the Red Bulborb without worry, then go on to get the Dual Fuel Reservoir.