CDI Bj.07/01 Hello After I even attached cardboard in front of the cooler and it still remains ice cold, I might next want to isolate the water pipes that go from the back to the front (tip from the heater installer) because at the back directly on the engine the pipe gets very warm and therefore think that the heat is lost on the way forward.Perhaps someone has a photo of below where these pipes run,Or someone can tell me what a strength of insulation is dreary he would have to (diameter of the pipes)I would also like to know the length beforehand, otherwise the whole disguise must first be dismantled. Greeting from the Eifel Dieter