hi, i did dip my finger in it and put it on my tongue, was bitter, my rad is full, but my expansion tank is down on the low, i topped it up the other day becuase i had a pipe leaky the other day at the bk by where you said but on top by back of cam cover!, clip was on a bit dodgy, i moved the clip up and thats ok now. id love it if it was just a bloody pipe. just gone out now quick, car starts perfect runs smooth no miss, i didint have time to leave it warm right up tho, got my baby daughter to look after. will have a good look on weekend, taking it up my mates garage, hes very good, jap cars are his speciality.