What is the normal water temperature for a diesel car?
2 Answers
Diesel car water temperature is normal between 70°C and 95°C. Diesel cars operate at much lower temperatures than gasoline cars due to their characteristic of long-term operation at low speeds and high torque. However, the optimal temperature during normal driving is between 70~80°C. If the temperature exceeds 90°C and remains high, it indicates abnormal engine operation. Below is additional information: 1. When the engine temperature is too high, you can try removing the thermostat: The thermostat's function is to monitor the coolant temperature in the engine at all times, keeping the water temperature at an ideal range of 80 to 90 degrees, ensuring a good working temperature environment for the engine. 2. The thermostat is located on the water inlet pipe leading to the heat exchanger: It plays a role in maintaining a constant water temperature. Additionally, you can flush and clean the radiator and intercooler, using professional radiator cleaning agents during the process.
When I first started driving a diesel car, I was always worried about the water temperature being too high or too low. Later, a mechanic told me that the ideal water temperature for a diesel car is between 80 and 90 degrees Celsius, and it's best to keep it around 85 degrees. There's a water temperature gauge on the dashboard—if the needle is in the middle, you're good; if it exceeds 95 degrees, it's prone to overheating, and the engine could get damaged, so don't push it. Once, I was stuck in traffic on the highway, and the temperature soared to 100 degrees. Luckily, I pulled over and added coolant. Water temperature being too low isn’t good either—it’s common to see it below 80 degrees when starting up, but it should rise within a few minutes of driving, so no need to panic. I recommend that beginners check the coolant level before every trip. Temperatures rise more easily in summer, and if the radiator is dirty, it should be cleaned. This habit saves money and hassle. While driving, make it a habit to glance at the dashboard regularly. If anything seems off, shut off the engine and check. Proper maintenance ensures a longer car lifespan.
