Audi A4 B6/B7 Seat Exeo cabin heater core matrix flush

This might only be of intrest for a very few, those with a Audi A4 B6/B7 with bad cabin heating.
A rather lengthy video from when I flushed the cabin heater core matrix. The reason I did it was a lack of heat in the car cabin. The flow through it after 19 years wasnt good, therefor I pushed water in reverse direction, I should have added a photo of the brown slush I got out of it :P .
The length of the video is pretty much how long it took, I also cleaned up the battery compartment and exchanged the cabin air filter since I was working in that area of the car.
The principle is simple, just flush water (with quite low preassure) in reverse direction. Too high preasure can risk damaging the core.
No esoteric special tools required, I did use a Biltema Plier art no 19-1498 for the factory clips, those broke however so I ended up replacing them with stainless steel screw-on clamps. The clasps used to hold close the hoses was art no 20-8231 (also Biltema), those are universal with a fairly soft edge so they dont dig into the material.
Music from Epidemic Sound, filmed with a Eken H6S camera, not the best, but it could take the occational water spashes.