Good evening I hope everyone is well. Found this form so going to ask here. I have a seat Leon mk4 1.5etsi fr first edition 2020 plate. It was low on coolant so I’ve went to my local auto parts and asked for coolant to top up my reservoir. I was given napa long life red coolant so I’ve added this into the coolant tank to bring it from below the minimum line to the maximum line. It was roughly around 250mls I added to the tank. I then read the book and it said not to mix the coolant so I’ve panicked and went to my local garage (not Vag approved) where I stay and they says they will drain the system and add vw coolant. The reason I don’t want to go to approved garage is incase it voids my warranty because I’ve added the wrong coolant and they will change it over so they hopefully can’t tell as it has a two year warranty and it’s just started. We can’t seem to find how much the system holds of coolant does anyone on here know what I should do? Thanks in advance