I have just started the installation of my Chinese Deisel Heater on my T6.1. I have tested this in my workshop and it worked a treat. All of the under body plastic covers are off and my 80L Fuel tank is dropped. Tomorrow I will fit the fuel pickup pipe. If anyone has any questions while the tank is off fell free to ask. I had to remove the AdBlu fill and vent hoses before the fuel tank fill tube would come out but it was all painless.