Liqui moly 2427 pro line engine flush 500ml liqui moly 2427 p align left this pro line engine flush 500ml from liqui moly can be used before an oil change to clean the oil circuit from lacquer formers and all types of insoluble oil residues simple to use and tested with diesel particulate filters dpf catalytic converters and turbochargers p liqui moly 2427 pro line engine flush 500ml