Can you mix Red and Blue coolant?

Fitted a new rad to my car today, and reused the brand new blue coolant that was in there with the old one.

Spilt a bit whilst doing it, so i need to top up just a full coolant bottle's worth of coolant. Ive got the better Red Coolant sitting on my shelf, but i was wondering if you could mix blue and red together and its ok, or if you shouldnt mix at all?

Edited by: richgit

 

Yes you can.

 

Would depend on the coolant specs......

 

There was a note on the last bottle of VAG coolent i bought saying all 3 they did would mix.

 

Yes, but this may not be VAG coolant

 

It may not be after-market either

 

The older G12 coolant will not mix with G11. However, G12+ will mix with G11 just fine!!

Assuming VW coolants being used of course.

 

as Deako said


There was a warning of severe corrosion problems when mixing G11 & G12 in a VW bulletin, said if they were mixed the cooling system must be thoroughly flushed and only one type used (that was before the G12+ was brought out)

 

Ooh, fair play.


The blue stuff is the standard one you get from GSF, and my red one (ready to put in) is 5 star stuff that i got from a warehouse...

 

Heres a colour chart to help you out.

 

@ HTC

 

Tut @ using cheap anti freeze! Go for the vag stuff all the time !

 

You'll be needing a full system flush out then really mate.

 

Why?


Who declared VAG stuff to be the best.........

 

VAG probably, and then one of the sheep started declaring that it's got to be best, someone took a bottle to Wolfsburg once

Same thing with toyotas, you are only supposed to fill them with Forlife. 14L in an MR2 at about 12 per 5L

 

I have heard that some of the cheaper brand antifreeze doesnt have effective rust inhibitors.

 

I aint put it in yet

 

but the purple coolant result wont match the blue detailing?