Here's why:
* 4-cycle engines are designed to run on regular gasoline. They have a combustion system that is optimized for burning gasoline without any modifications or additives.
* Additives can sometimes be harmful. While some additives are marketed for engine cleaning or performance, they can sometimes damage sensitive engine components or lead to unexpected issues.
* Modern gasoline already contains additives. Gas stations add additives to the gasoline they sell, which are designed to prevent engine problems and optimize performance.
However, there are some important exceptions:
* Small engine fuel stabilizers: For storage, small engines (like lawnmowers, generators, etc.) often benefit from adding fuel stabilizer to the gasoline. This prevents the fuel from degrading over time, making the engine harder to start.
* High-octane fuel: Certain performance engines might require higher-octane gasoline to prevent knocking or pinging. However, this is usually specified by the manufacturer.
In conclusion, unless you have a specific need or recommendation from the engine manufacturer, do not add anything to the gasoline for your 4-cycle engine. Stick to regular, unleaded gasoline from a reputable gas station and your engine will run as it should.
