The car is in a garage at 2200 rpm, the sound is echoing quite a lot and the test needs to be done a bit quick after warm up to prevent excessive coolant overflow.
I removed about a cup of coolant on cold start to prevent overflow, but it still expanded and you can see its overflowing and dribbling. thats why this video is done a bit quick. And I dont have the luxury of hiring a cameraman to work for me.
Btw. I was wearing my safety glasses as, but not seen in video.