According to a Gates Corporation report, “Testing by Gates engineers shows that a Class 8 truck, operating at a temperature of 210☏ with a two shift per day driving cycle, would lose nearly five gallons of water each year if it was equipped with silicone hose.” FYI, Gates makes both rubber and silicone coolant hoses so hold off on the forum bullshit line of, “Well of course Gates made that report. What does that mean to you? It means with the daily heat cycling of a street driven car, that you will lose water from your cooling system over time. Here’s a fun fact: silicone’s water permeation rate is 15 times greater than EPDM rubber. While silicone radiator hoses are great, because they are capable of carrying much higher temperature fluids (max 350☏/177☌) than a standard EPDM rubber radiator hose (max 257☏/125☌), they are really only ideal for race cars. So I told them, add water regularly or stop your bitching and get some rubber hoses on the car. I can remember several occasions when people would tell me something like, “Dude I was driving the other day and my car started to boil over! I added 4 quarts of water to it! Did I lose a head gasket? Where the hell did the water go?” I would ask them if they had silicone radiator hoses and of course they would. Who knows how many of those “Samco” hoses are actually genuine? China is really hard at work these days with the counterfeit shit recently. If you look on eBay, there are about 15+ pages of shit brand silicone radiator hoses and probably 1 page of genuine Samco radiator hoses. I say similar because I am pretty damn sure any silicone hose from China is inferior to Samco’s. We can thank China for finally figuring out a silicone formula that is similar to Samco’s silicone turbo and radiator hoses. I noticed that there are more and more “manufacturers” of silicone radiator hoses. Silicone Radiator Hoses: Not for the Street
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