Depends on geography. In Texas, for example, it will last a really long time. Bailing wire will allow the duct tape to last the life of the car/truck/boat/tractor/(name your transportation here). Elliott Potter wrote: > > How long will duct tape stick to the plastic valve cover of an engine? > Hypothetically, of course. Yea. > -- > Elliott > (it's only a *little* duct tape...)