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s5 thermostat

  1. S5 4.2 TFSI Thermostat swap

    Audi A5/S5 Tech DIY
    Hi Guys, I've recently become the happy owner of a 2008 S5. It appears however to take a long time to warm up, but will eventually do so if left sitting idling, but when you drive it, and a breeze flows through the radiator, it then cools back down rather fast. So I'm suspecting the...