Mixing different brand power steering fluids

[AVANTE]

Hi guys!

I need to top up my PS fluid by a few mililitres.

However, I have no clue what brand of PS fluid the previous owner used. 

But Im sure it's most probably Dexron 2 grade fluid (as recommended by the manual). 

Now if I mix a different brand dexron 2 fluid with this, will there be an issue?

Eg:- Mixing Castrol brand D2 with STR brand D2

Its for the Peugeot 406, equipped with a mechanical power steering pump. 

 

[mazdaspeed]

Not an expert but if it's a mechanical, you would not have an issue. I have a similar mechanical system and so far no major issues. 

But just to be safe lets see if any other views come in.