My PO has put green stuff in there. That is the reason I want to flush it. I would like to flush the whole stuff and replace it with BMW coolant.

I understand it is not easy to remove the coolant in heater core. Is it OK if the green and blue mix?

Quote Originally Posted by joshua43214
make sure the car is flat on the ground when you drain it, so raise it off the stands and set it on the ground for a few minutes.
Does this mean I cant do the whole job by plcing the car in ramp?

Thanks
Arun