How long should high idle be used when operating in cold conditions?

Operating the Joint Light Tactical Vehicle (JLTV) in cold conditions requires precautions to ensure optimal performance and engine longevity. The recommended duration for maintaining high idle in cold conditions is 25 minutes. This timeframe allows the engine fluids, including oil and coolant, to reach an appropriate operating temperature, which is vital for proper lubrication and efficient engine function.

Using high idle during this period helps achieve optimal engine performance by preventing potential mechanical issues related to cold starts, such as increased friction and wear. This duration is established based on manufacturer guidelines and extensive testing to ensure that components reach their optimal operating condition before regular driving. By adhering to this recommendation, operators can ensure the vehicle is performing safely and efficiently in challenging environmental conditions.