cooling system

Hi riders, I bought an FZ6 last summer, and I did a coolant change before winter. I noticed that there is a Y-shaped metal cooling part in the cooling circuit, which looked very rusty. (For Denmark, it is impressive that only that part is rusty on the bike-The roads get huge amounts of salt...

2005 S1, 50,000 miles Observation - For a few months now, bike seems to take longer to warm up. Recently, if ridden as soon as the tach stops blinking, it will start blinking again in a few minutes of riding. After that it goes solid and stays there. Also recently, once warm up is done and...