WHAT TYPE ANTI-FREEZE DO I USE on 1990 BMW 750iL

WHAT TYPE ANTI-FREEZE DO I USE ?

1 answer 1 comment
Use only BMW anti-freeze (blue stuff)
It is an anti-corrosive and anti-freeze
It is a concentrate
If the system is drained completely, add 2 bottles and fill the rest with water.
If you are merely topping it up make a mixture in a separate bottle with the mixing specifications noted on the back.
Where do you buy it ? I tried acouple auto parts stores,but they do not carry it