Audi A3 Antifreeze

[howardpigott]

I have just checked the strength of the Anti-freeze on my wifes petrol A3, and found that it is low, and has reduced over time.
The car is 4 years old, and the coolant has never needed topping up.
Audi say the system is sealed for life, which I dont believe as extended life coolant should be changed every 5 years (Orange)
Does anyone know the spec for Audi antifreeze please?

[vwcabriolet1971]

I Believe that the G12 ( ++?) coolant does not need changing . However if you renew the water pump at each cambelt change then this question does not really arise with normal mileage motoring. Water pump changes at cambelt change time are not that expensive as most of the stripdown time required for the water pump is already done . Water pumps are not that expensive ( approx £30). I had no coolant problems with a MK4 TDI 110bhp golf over 11 years ownership and 142,000 miles but I did have water pumps replaced with each cambelt change ( 65,000 & 140,000 miles). I think it's foolish not to get the water pump ( & obviously the coolant) done with the cambelt.