i guess its high heat, i havent had any probs with it, you can see it flow the best everywhere because its all going at once, but you cant see it under the cover so whats the point of just putting it there? yea thanks jeb i have heard that you could put a spring in there but only after i had put those elbows in there, i might change it later, but i dont feel like changing them right now. the only thing i dont like is that when you first put the radiator fluid in there its bright green, and then when it runs through, it changes in to this un-bright green color. oh well