Well, I guess it could actually be blue coolant. But let’s be real about it. First of all there are only a couple blue coolants. And they are not really commonly available, and are a little pricy. Also, the only blue coolant I know from Zerex is G-48, G-05 is yellow.So unless the previous owner broke down in front of a Saab dealership, and needed coolant, the chances are pretty good the blue stuff in your radiator isn’t Zerex coolant. Or maybe, the guy was a maintenance freak and heard all the bad stuff about Dexcool. Then and somehow concluded the best choice was a hard to get blue coolant not really intended to be used for his car.
I can’t wait to see how this turns out.
