SYPRIN Engine oil flush - for diesel and fuel petrol engines motors systems I treatment cleaner degreaser I flushing additive - 250ml : Amazon.co.uk: Automotive
Liqui Moly Oil Sludge Flush Engine Cleaner Petrol Diesel DPF 300ML 520 – World of Lubricant
Diesel Clean OSC (Oil System Cleaner) - Wynns USA
Wynn's DPF Regeneration, Injector and Engine Flush Kit - Skinny Tree Limited