Blue coolant
My 09 SL was built in August so I guess that I have the blue coolant. Just like Robert, my coolant level is right in the middle of the min max level. I guess I won't ask for a top up since I don't want the dealer mixing green coolant with blue. Since the blue coolant is good for 10yrs and the green is good for 4yrs, why does the owners manual suggest changing the coolant after 2yrs or 48,000km?
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