I have been reading the old posts about coolant leaks and how DexCool may actually be eating hoses from the inside out. I have had to replace about 1/2 a quart of coolant twice over the last 4.5 years (low coolant light). Now that doesn't seem like a big problem, I mean as far as injector problems and such, but something is up. The dealership can't seem to find anything, so I am wondering if I am suffering from failing hoses. My question is, does anyone know of good aftermarket hoses available for the DuraMax, i.e. the green silicone hoses that are found on the 9C1 Caprice (Police version) or the blue Goodyear hoses that are a bit cheaper and are purty much guaranteed forever? Or, are the stock hoses good enough and I just need to replace them? BTW, Goodyear doesn't seem to have an application for the Duramax. Any and all help welcomed.