There are thousands of older rigs going farther. The one variable, only you can answer, is what is your tolerance for potential problems? Some people will have panic attacks if they run out of windshield wiper fluid, other people would respond to the engine seizing up and dying by popping open beer and singing along with Doris Day" "Que sera sera, whatever will be, will be. The future's not ours to see, que sera sera.". (totally random aside, who, like me, is totally surprised that Doris Day is still alive and kicking?)
