Bardahl Engine Flush SpecificationsBardahl Engine Flush is an oil additive designed to prevent overheating and premature wear of the engine. Packaged in a 300 ml bottle it keeps deposits in suspension into the oil making them easier to remove when the oil is changed. Compatible with all types of lubricant and all types of engine it effectively cleans the entire engine oil system and guarantees optimum lubrication with extended service life.How to use: With the engine warm and switched off pour the contents of the bottle before draining into the engine oil (maximum 10% of the sump capacity). Run the engine at idle or drive normally for 15 minutes then drain and replace the oil filter. One bottle treats up to 6 litres of oil.