Gross Becher Internal Engine Cleaner prevents congestion in oil filter. Cleans external materials such as remnants, excess oil, and adhesive substances accumulated in the engine and ensures a same-quality operation of the new added oil. Removes congestion in compressed segments. Removes congestion in plugged oil passages. Helps ensure a more efficient and durable operation of the engine.

Use: During an oil change, add to the previous oil and operate the engine for 5 minutes at idle speed. Use 300ml. for every 4 liters of oil.