hello everyone, I lodged a complaint with FIAT about the response of TASS regarding coolant top up with water only. I have also mailed the complaint to florina kamble as suggested by Fiat customer care. Let's see what happens. Hope I will soon get a reply from them. In any case, we don't have to give our ear to foolish ideas given by service guys. I think going strictly by the manual of FIAT will add years of life to our Cars.