Racing ATVs typically require high-performance synthetic oils that are specifically designed for the high rpms and temperatures of racing engines. Diesel oils, such as Rotella 10w-40, are formulated for heavy-duty diesel engines and may not provide the necessary protection for a high-performance racing ATV engine.
You should always refer to the owner's manual of your specific ATV to determine the recommended oil type and weight. Using an improper oil may void your warranty and cause problems with the engine.
