FuelCheck

term.clear()
print "Checking fuel..."
print( "Fuel level is "..turtle.getFuelLevel() )

if turtle.getFuelLevel() < 700 then
    print ("Add coal to inventory")
    sleep(3)
    exit()
end

if turtle.getFuelLevel() < turtle.getFuelLimit() then
    for n=1,16 do
        local nCount = turtle.getItemCount(n)
        if nCount > 0 then
            turtle.select( n )
            if turtle.refuel() then
                print( "New Fuel level is "..turtle.getFuelLevel() )
            end
        end
    end
end