Dear all sifus and frens,I'm definitely a baby when it comes to UDM, guidance and assistance from all is much welcomed and appreciated. I currently own 2003 E46 318 (2.0L).1) Rattling sound from windows?I'm having this anoying rattling sound problem that i'm pretty sure comes from the windows. It goes off when i rolled the windows down a bit, but it comes back again when the windows are fully closed. Any ideas? It would be helpful i someone could share the common problem before, perhaps before i decided to bring it to the workshop. 2) Topping up Coolant To top up the coolant (when the indicator on OBC start to light up) - do we top up with the coolant or combination coolant+watet (if so, % ratio?) or plain water will do just fine? any specific brand of coolant?3)Eagle eye for E46I am thinking of getting eagle eye for my e46, any comments? is it worth having it? does it help with clearer vision at night? side effect to the car, messing up the sensor to OBC? how much does it cost? any specific brand that i should out for?Thanks for helping - Razman