Antifreeze top up - 306 HDI

[rowey200]

Please excuse my ignorance, but is there a certain spec of antifreeze I should be using to top up the coolant in my 306 HDI. I just want something that will mix fine with whatever is currently in the system (changed by previous owner).

Cheers in advance

[thepeoplespal]

Mine is the red coloured antifreeze, other than that I don't think I've ever had to top it off more than a couple to times in 10 years of 307 ownership (garage do the changes when needed). My trusted motor factor gave me the right stuff.

[ianwayne]

Don't mix the types. If you have blue coloured coolant (the cheaper variety), stick to it.

The red stuff is better (can be left for 5 years or more) but if you add blue antifreeze to it, you can get a sort of gloop forming because they have different chemical construction.