Hi All,

So the car did have green coolant in which threw me off as BMW use blue and only last year I believe changed to green which this car most certainly wouldn't have been switched to (previous owner had little to no care for the car by the looks of other things)

However, I had a coolant leak occur a few times resulting in probably 10 litre or more of coolant being added Combined with the antifreeze loss when I changed the thermostats as well, would you say to just go with

Adding BMW's coolant now

Flushing again

Top up with green coolant again (which is what exactly?..)

Heres a picture I took when I did the thermostat change and prior to loosing over 10 litres of coolant

https://i.imgur.com/WOBZals.jpeg