Just as it says...do you feel it is worth it to upgrade to better silicone type hoses on the cooling system? Have you done it? If so what did you think of the upgrade? What did you buy and where? How much were they? I am replacing radiator tmrw and was considering doing this. Also they guy at the parts store said to use just a little barsleak for aluminum and said he had the chance to tour both GM and Ford plants and that they use it the fiorst time on the cars new..What are your opinions?