Originally Posted by Chris L.

So after the car cooled down, I opened the overflow reservoir. BLUE.....the G05 is GOLD ??????? The stuff in the reservoir tested 5 or 6 degrees warmer for a freezing point than the gallon of 50/50 G05 they returned to me. OK, I'm a dufus.......when this procedure is performed.....do they fill the radiator/engine from the reservoir or is there some other point like the old radiator caps cars used to have? If they filled through some other spot & failed to drain the overflow reservoir.....that would explain the blue still in the reservoir & them not using the full 11.8 quarts the manual calls for...?

In any case, I syphoned the 5 pints of blue out of the reservoir & replaced with an equal volume of the G05 50/50.

I'll wait a couple of weeks and let the expansion/contraction cycles mix the stuff in the reservoir with the stuff in the radiator/engine. If any substantial blue shows up.......I'll have to question everything they did?