Known problem with this year's vehicle but used car dealer sold it anyway and did nothing but offered to look it over and fix it, adding the cost of repairs to the sales cost... We drained and flushed the radiator and replaced the coolant. There were no over-heating problems and was able to clean the majority of the goop out of the radiator. All this was before we found out that this has been a known problem since 2005. The radiator will need to be replaced to correct the manufacturer's known defect and the manufacturer will do absolutely nothing, the car is too old... Yeah...