What temperature should a diesel engine run at?
What temperature should a diesel engine run at? With a new 88C stat, diesels seem to run around 88-92C, but rarely higher. In stationary traffic all engines will heat up, diesels included. The petrol engines also use an 88C thermostat, but typically run at 95-100C, eflecting their lower efficiency maybe, but they are also lighter and made from aluminium. What happens if you don't let the Turbo Cool Down? This will cause damage to the blades inside the turbo and eventually wear down the turbo until it breaks. Not Letting the Turbo Cool Down. After a long drive or aggressive...