Rallye possible cooling h/g problem?

[Mitch]

im pretty sure the d turbo ones are a different design so dont think so mate.
If your going to bleed it, if you can afford it, get a bottle of coolant and a thermostat (£4 ish) and bung that in. That will more than likely be why its running slightly cold.
But then again, if your going to do the belt, you will want to do the waterpump at the same time which means new coolant anyway so you could wait and do it all at once. All adds up unfortunately

I work at a garage so I can do all things like that/get parts etc never really do much work on petrols, pretty much all diesels, just seemed strange how it was hissing and I thought you'd be the guys to ask! I'll order up a stat tomorrow and will hopefully get around to doing it Saturday afternoon, plenty of others things to be getting on with as well, all needs to go back to standard I reckon, I'll keep you updated!