Will adding diesel to a 92-octane gasoline car have any impact?

[DeAdelyn]

Adding diesel to a gasoline car will affect the engine. Here are the specific details about adding diesel to a gasoline car: 1. Impact: Gasoline and diesel have different ignition points. Diesel ignites at around 220 degrees Celsius, while gasoline ignites at approximately 427 degrees Celsius. Therefore, if diesel is added to a gasoline engine, it may ignite prematurely inside the cylinder, causing engine knocking and significant damage to engine components. Diesel might also clog the gasoline injectors, leading to a situation where the vehicle cannot receive fuel. 2. Solution: Stop the car, turn off the engine, and call for a tow truck to wait for assistance. Do not continue driving to avoid causing further damage to the engine.

[McElizabeth]

That day when I put the wrong fuel in my car was absolutely terrible. My car usually takes 92-octane gasoline, but in my rush, I accidentally filled it with diesel. After starting the engine, it began shaking violently, and black smoke poured out of the exhaust, which scared me so much that I immediately turned it off. Experience tells me that gasoline engines are designed to ignite with spark plugs—diesel is too viscous to ignite properly, and forcing it can clog the fuel injectors and damage the piston rings, leading to repair costs of thousands of dollars. Later, when I towed it to the repair shop, the mechanic said the fuel tank and fuel lines had to be thoroughly cleaned, or the residual diesel in the system could corrode internal components. Since then, I’ve made sure to double-check the fuel pump colors every time I refuel: gasoline pumps usually have light-colored labels, while diesel pumps are often dark or yellow. I’ve also developed the habit of verifying the sticker reminder on the fuel cap. In short, using the wrong fuel isn’t just a minor inconvenience—it can lead to expensive repairs or even accidents. Now, I’d rather take a little extra time to confirm than relive that nerve-wracking experience.

[Boromir]

I've talked to many car owners about similar issues, and they all deeply regretted it. Take my neighbor Old Zhang for example—he had just bought a gasoline sedan not long ago when he accidentally filled it with diesel instead of 92-octane gasoline once. The car completely failed to start. When the tow truck driver came to inspect it, the fuel injectors were already seized and had to be replaced, resulting in a repair bill of over 3,000 yuan. Diesel and gasoline have different properties: gasoline engines rely on spark plugs to ignite the fuel, while diesel requires high-pressure compression for auto-ignition to work. Mixing them leads to incomplete combustion, severe carbon buildup, and damage to the engine core. In hindsight, if he had just glanced at the pump label (gasoline nozzles are usually marked 'unleaded,' while diesel nozzles say 'diesel') or set a reminder on his phone app beforehand, he wouldn't have made such a mistake. These kinds of lessons also remind me: stay sharp and double-check the labels every time I refuel. In fact, the cost of prevention is minimal—just paying attention in daily life is enough to stay safe.

[LeWilliam]

I must emphasize that misfueling is an absolute disaster. If you put diesel in a gasoline car, the engine won't start at all, and it will instantly damage the fuel pump and spark plugs. Don't attempt to force-start it, as that will extend the damage to the piston and valve system, making the consequences even worse. My advice is to stop the car immediately, call for a tow truck, and have it sent to a professional repair shop to clean the fuel lines. For prevention: Gas station nozzles are clearly labeled for gasoline and diesel, with gasoline nozzles typically being slender and long, while diesel nozzles are thick and short; develop the habit of checking your keychain or placing a reminder sticker on the fuel cap. Always choose reputable gas stations for refueling, as employees with standardized procedures can also reduce the risk of errors.