Audi 80 B2 change radiator fluid

[giannis12]

Hello,I have an Audi 80 B2 type 81 with 1.6 litres carburetor engine and I want to change the radiator fluids because have not changed for many years.I have already put in radiator cleaner and tomorrow I will empty the radiator circuit to see if need another one cleaning.I want to ask what kind of coolant to prefer for that engine and what is the total capacity of circuit because i have lost the owner's book.
Thank you for your time

[John.]

I'd be for putting the old blue stuff in, not sure what colour the genuine Audi coolant would be when your B2 was new but it would be ethylene glycol which is what the blue stuff is.
Regarding capacity, why not mix the anti-freeze and just measure/observe what you put in?
I would think 6 to 7 litres maybe?

[giannis12]

Thank you for your advise John.Happy new year!

[billy_bunter]

Probably to late in answering. Just done mine. Use Blue stuff and 6.2L for non air con. I will check the Haynes tonight when I get home

[giannis12]

Thanks billy,i changed the old one antifreeze with another which it contains ethylene glycol,as John said ,and takes about 7L for the A/C edition.