Fuel Barrels are an uncommon Barrel found in Donkey Kong Country and Donkey Kong Country 3: Dixie Kong's Double Trouble!.
Donkey Kong Country
The Fuel Barrels make their first appearance in Donkey Kong Country and are found in the level, Tanked Up Trouble which fuel up a small platform which takes the Kongs throughout the level to be able to complete it. When Donkey Kong and Diddy Kong touch one of the Fuel Barrels, the fuel immediately fuels up the small platform which the Kongs ride on. Some of these Fuel Barrels hardly take up any fuel for the small platform.
Donkey Kong Country 3: Dixie Kong's Double Trouble!
The Fuel Barrels make a reappearance in Donkey Kong Country 3: Dixie Kong's Double Trouble! only found in the level Rocket Rush. They are almost the same as the Fuel Barrels from Donkey Kong Country, except that they are in dark blue color. Dixie Kong and Kiddy Kong must collect these fuel to fuel up the Rocket Barrel, a special kind of barrel which takes them throughout the level. They fill up more fuel for the Rocket Barrel than they did in Donkey Kong Country, but these fuel barrels hardly appear throughout the level so Dixie and Kiddy must be careful to not waste fuel.