Red anti-freeze

If it was mine, I'd probably drain & flush the system; then refill it with what I wanted to stay in there. Cheers

Well, I suppose that if you mix them in equal quantities you will get white ;-))

Red is Valvoline G30. The blue is G48. SAAB has used both in various models over the years, the red being more recently. Althought they are very similar composition, your car should have the blue G48 in it. While you could obtain some of the red stuff, it might be a good excuse to do a full flush and fill with the right stuff for your car.

I've heard to use geniune Mercedes Bens anti-free from their dealers. It contains (or doesn't contain, I forget) a chemical that keeps the antifreeze from eating away at your heater core, a very big weak spot in the 9000. I can attest to that as I have a sickly sweet smell and fogged windows whenever I turn on the heat for the first time.

-Chris

Sheherezade F>

Can you explain the differences ?

Is it indeed the case that they shouldn't be mixed ?

Graham

Yes, but it is not red anymore...

The difficulty is that anti-freeze is often described by what it doesn't contain. E.g. silicate free (red) and nitrite, amine and phosphate free (green). I use the read stuff for my 9000. Saab antifreeze is red colour.

Well... you can download the datasheets and investigate it yourself right here:

I'm not sure, to be quite honest. But there is certainly no harm in a good flush and refill.

Mine is blue (or is it green?) and is what the dealer has been fitting in the car from new (assuming they have ever changed it). 9000 year 97.

C.

When you say 'anti-freeze' are you meaning you add water and coolant then add an anti-freeze product, or do you mean what we tend to call 'coolant' here in Australia without anything else being adding to give anti-freeze properties?

Craig.

In the US, Antifreeze = Coolant.

In the UK as well. Antifreeze = Coolant + Antifreeze + Anticorrosion. That is why it needs to be kept an eye on.

Coolant chat.

Excellent site. All you could wish for to be a coolant professor.

And I was vindicated in my use of water from a de-humidifier tank to mix the coolant. Tap water contains a small amount of chlorine.

Not mine. Mine comes from a well in my backyard.

Most chlorine will evapporate overnight, if the water is allowed to stand, and will disappear very quickly from your heating system once the water gets hot for the first time.

Excellent site - thanks for the link. I will definitely add this to the technical library page on my

Regards,

Craig.

The use of any water other than distilled in the cooling system is a serious mistake and will enventually damage the cooling system. Electrolytes in tap and well water will cause corrosion either slowly or rapidly.