Engine flush to clean engine (internal). Pour entire bottle of johnsen's engine flush into cold engine BEFORE oil change. Start engine and let it idle for 5 mins before draining away used oil. Done. Now you can proceed with engine oil change.
1 bottle = 355ml @ RM20/bottle. Cash on delivery only. Subang Jaya and nearby area only. Contact dr chew @ . No WhatsApp/private message. Sms/telegram/signal/call only.