drain

print('Ready to drain!')

while not redstone.getInput('top') do sleep(.1) end

print('GTG!')
while true do
    while turtle.getFuelLevel() < 2 do
        turtle.select(1)
        turtle.refuel(1)
    end
    if turtle.detect() then
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.down()
    end
    turtle.forward()
end