Cinquecento and the Seicento MK1 with orange indicators (-2001) get blue Paraflu 11 and the latter 600 (2005-2007) get red Paraflu UP.

But what's the right coolant for the MPIs?

Doesn't matter tbh, as long as you fully flush out whatever is in there now you can use either red or blue.

You can also get a universal one that works with Glycol or OAT types.

Eklipze3k said:

Doesn't matter tbh, as long as you fully flush out whatever is in there now you can use either red or blue.

Click to expand...

I'd rather use G11/blue where it was used prior, because the red stuff flushes off the corrosion inhibiting coating, which on parts rusting from the outside in (aka radiator) might be enough to cause leakage.

After a radiator change or changing red for blue on the other hand, you're right.

I flushed the Seicento cooling system out and been using this for the past 4 years. It is concentrated so you add 1L water to 1L of this. It is a very high spec OAT. I have used it in all my cars with very good success. I also use there GM 10W/40 engine oil.

http://www.ebay.co.uk/itm/VAUXHALL-GM-COOLANT-ANTIFREEZE-RED-1-LITRE-GENUINE-NEW-/160973991469?hash=item257acc2e2d:g:3gEAAOxy5P9RGifR

Hope this helps.