E30 Zone

what coolant should i be using ? there was blue in mine first then mechanic used pink after he done timing belt water pump and cam seal which is the right one to use ?

,,, usally older cars use blue & i think cards from 1999 use pink,
it will say in the handbook,

Mine is blue and always has been

From what i've read you can use pink stuff in our cars if you make sure you flush out all traces of old blue/green first.
it seems pink fluid only causes a problem in real olde-worlde cars with brass/copper radiators that are soldered.