Normal Blue Ethylene Glycol type Antifreeze
50/50 mix
Don't be tempted to use the longlife coolants, they are specifically designed to run in aluminium radiators and the organic acids in them will attack the solder in the OE copper/brass radiator as fitted to your car. Also unless the previous coolant can be totally flushed out, then the longlife coolants tend to react and form a crystal/sludge that that quickly clogs up the cooling tubes in a radiator core.
Simon @ SiFab.co.uk
