lava_refuel

local count = 0
while turtle.getFuelLevel() < turtle.getFuelLimit() do
  turtle.forward()
  turtle.placeDown()
  turtle.refuel()
  count = count + 1
end
turtle.forward()
turtle.placeDown()
for i = 1, count + 1 do
  turtle.back()
end
turtle.refuel()
print("Fuel is now at", turtle.getFuelLevel().."!")