radiator was full but reservoir was empty why?
My car has 63000 miles.
My car has an automatic transmission.
The first thing to check is for any leaks in the system and refill the overflow bottle with 50/50 coolant and then see if system gets low after driving a couple days again. If it keeps getting low then have system checked to see where the coolant is going. If after filling reservoir and driving a few days it does not change level then just keep checking every few days of driving to make sure it stays full.
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