right the cambelt is well over due, its a 1993 1.8 zetec, are the tensioners common to fail or unknown to fail? and the guides? its done 140k and i dont know any history, should i just do the belt or is the kit worth the extra.

as well, with it on 140k what oil should i use? 5w30 still ok or should i use 10w40, and what mechanicly should i expect to fail at this mileage or is it just hit and miss.

oh also, what coolant does this take? the red stuff or blue?