1. Diesel Knock: Diesel fuel has a higher compression ratio than gasoline and ignites at a higher temperature. This can cause knocking or pinging in a gasoline engine, especially when it's under load or at high RPM. Knocking is the result of uncontrolled combustion, leading to increased stress on engine parts.
2. Reduced Lubricity: Diesel fuel has lower lubricity compared to gasoline. Gasoline contains additives designed to lubricate the fuel system components, like the fuel injectors and fuel pump. Diesel, on the other hand, has fewer lubricants, which can lead to increased wear and potential damage to the engine's fuel system components.
3. Carbon Buildup: Diesel fuel has higher carbon content and less complete combustion compared to gasoline. This can result in excessive carbon deposits in the combustion chamber, on the piston rings, and in the exhaust system. Carbon buildup can lead to decreased performance and increased emissions.
4. Emission System Problems: Diesel contains sulfur compounds that are harmful to the environment. Modern gasoline engines are equipped with catalytic converters and other emission control systems designed to reduce harmful pollutants. Adding diesel to gasoline can potentially damage these emission control systems.
5. Warranty Issues: Using diesel in a gasoline engine may void the vehicle's warranty, as it's considered an alteration from the manufacturer's specifications and intended use.
It's important to follow the manufacturer's guidelines and recommendations regarding fuel types and additives to avoid any potential damage to the engine. If you accidentally added a small amount of diesel to your gasoline engine, it is best to consult with a qualified mechanic or follow the advice in your vehicle's owner's manual. They may suggest diluting the diesel with a larger amount of gasoline to minimize potential harm.