What anti freeze to use

[Frampty]

Have been looking through the forum and still confused what make of anti freeze to use and how much.
Lot of talk about using ionised water.

[mark030358]

Hi,
Mono-ethylene glycol based antifreeze, the blue stuff. 50/50 with de-ionised water.

Cheers
Mark

[elans3]

As above, I always use de-ionised water, 50/50 with Bluecol anti-freeze.
I used it for years in my Elan, and also my Alfa Twincams.