To use Engine Clean, Engine Clean is advised to add Engine Clean to warm engines before an oil change. Let the engine idle for 20 minutes. Afterward, drain the crankcase, change the oil filter, and replace the oil. One bottle of 300ml can treat up to 5 liters of engine oil. For manual transmissions and differentials, Engine Clean is recommended to add a maximum of 4.5% to 5% of the total oil volume, drive for a few hours, and then drain the lubricant.

This product is compatible with all mineral, semi-synthetic, and full synthetic engine oils. It can also be applied to non-automatic gearboxes and differentials.

This product cleans the entire system, removes varnish, neutralizes acids, and dissolves deposits before an oil change. It also helps quieten noisy hydraulic valve lifters by removing deposits.

The primary purpose of Engine Clean, often referred to as "Engine Flush," is to ensure that the new oil is not contaminated with old deposits after an oil change. It cleans engines, hydraulic systems, gearboxes, and differentials.