where the arrow points is a clickin sound quite loud on start up but once engine is on for about half hour, so well warmed up it seems to go. (time of year bein cold) i dont know someone help im worried it might lead to other things. also the other arrow pointing to cooler fluid. this is where i filled up. si this wrong? was i meant to do it from top or radiator? thanks to montanajr as i used his pic for the topic as didnt have one of my own so rather get up off my ass i copy and pasted his one