I left my car into a BMW main dealer in Dublin recently for a coolant change. I specified that I wanted deionised water used.

The previous time the coolant had been changed was at a specialist. I noted the the coolant that he put in the car was a pink colour.

When I got the car back from the BMW main dealer and looked under the bonnet, I was expecting to see the familiar blue BMW coolant, as I know BMW OEM coolant is blue in colour. I was surprised to see that the coolant in the expansion tank was still pink in colour.

I left two cars in with them that day, the other car had blue coolant in the expansion tank and when I got the car back it was blue.

Am I missing something here guys? Do BMW use a pink coloured coolant?, As I have a suspician that they did not change anything and charged me €100 for doing absolutely nothing.