fred42 wrote:
Perhaps one of you could help me understand if someone has mixed the yellow and green. If so, I should replace. I can see green on the top of the gold.
Probably not a huge problem. It isn't fair to say coolant is coolant, but in a pinch, if you have a need to keep the system full between services (this means you have a leak) or if you are on the road and need to top off, mixing is probably not the worst thing to do, so long as you get cooling system maintenance done when it is convenient. Ideally a good shop will know the proper coolant to put in after a repair or flush.