Just have the washerpump pump all of it out, fill the tank with plain water and pump it out again.
Then fill up with washer fluid.
Coolant is perfectly soluble in water.
But if they put coolant in there....what a fuck up for a garage....
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Z4 3.0i | ESS TS2+ supercharger | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers/KW camber plates | Sachs race engineering clutch | tons of custom sh#t
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