Diesel engines are known for their fuel efficiency and high torque delivery, but freezing temperatures can push them to the limit. When the thermometer drops below 20-degrees Fahrenheit, starting a diesel engine becomes challenging due to reduced battery efficiency and the thickening of diesel engine oil, which can cause issues like reduced engine performance and premature wear and tear of components. These conditions prevent your car from achieving a cold start, which is when the ambient temperature is lower than the engine’s normal operating temperature….

Check out the original article: [Slashgear]5 Block Heater Alternatives For Diesel Engines