How often should the coolant in a Prado be replaced?
1 Answers
Prado requires coolant replacement every 2 years. While coolant allows for evaporation loss, any deficiencies observed during usage should be replenished with additional coolant. The coolant replacement procedure is as follows: Before performing a complete coolant change, conduct a thorough inspection to check for any leaks or cracks in the piping system, with particular attention to the five-way hose. This hose derives its name from having five connection points that distribute coolant to different vehicle components. If any coolant leakage is detected in this section, replace the hose or resecure the connections as needed. Drain the old coolant, then flush the fluid channels with clean water. Fill the coolant reservoir with water and continuously circulate it through the engine cooling system. Start the engine and let it idle for 3 to 5 minutes to facilitate water circulation. Initially, the discharged water may appear slightly pinkish - continue flushing until the outflow runs clear. Remember to disconnect the heater hose to completely drain the heater core. Approximately one hour after draining, pour new coolant into the radiator hose to enable rapid filling of the radiator. Then add another container of coolant to the reservoir until nearly full. Run the engine for about 10 minutes - as air pockets are purged from the system, the fluid level will drop. Top up the coolant to the "MAXT" mark on the reservoir.
