I bought the car in November with 48K. It's currently at 58K. This car was owned by an elderly woman and I am pretty sure the coolant is the factory fill Toyota LL coolant. The coolant tank is clean with no sediment that I can see. The color in nice and red as it should be. I figure a couple drain and fill sessions should get me up to par with the age of the vehicle. Anyone see any issues with this?