Kia K900 antifreeze smell after 10 minutes of running, dealer could not duplicate issue on Kia K900

Some Kia K900 owners report experiencing an antifreeze smell after running the vehicle for about 10 minutes, which could be indicative of several potential issues. A common cause is a coolant leak, which may stem from a cracked coolant reservoir, broken thermostat housing, or internal leaks, even if not immediately visible. Others have noted that a jammed thermostat in the open position could also lead to this odor. In cases where dealers cannot duplicate the issue, it is crucial to ensure that all cooling system components are thoroughly checked, as forgetting to tighten connections after service can result in coolant smells. Additionally, some owners have found that rinsing around the radiator, radiator cap, and overflow jug may help eliminate minor overflow or vapor issues causing the smell. Monitoring the coolant temperature gauge and the "Check Engine" light is also advised, as low coolant levels or engine problems may trigger these indicators. If the smell persists, consulting a different mechanic for a more comprehensive inspection is recommended.