From the makers of GUNK®. MOTOR MEDIC Synthetic Motor Flush for turbo-charged gas and diesel engines is a unique blend of synthetic solvents and oils that effectively removes gum, varnish, and sludge deposits and frees sticky valves and lifters. Synthetic Motor Flush improves oil circulation, is safe for use with turbocharged gas and diesel engines, and will not damage the seals or cause bearing wear when used as directed. Synthetic Motor Flush is an inexpensive way to clean up the internal components of an engine. This diesel fuel additive complies with the federal low sulfur content requirements for use in diesel motor vehicles and non-road engines.
- Check to make certain oil in crankcase is up to safe level.
- Add MOTOR MEDIC Synthetic Motor Flush to a cold engine before changing oil and filter. Use entire bottle. Idle engine at normal speed for 5 minutes. DO NOT DRIVE VEHICLE.
- Drain crankcase and remove oil filter. Replace drain plug and install new oil filter. NOTE: On engines with high mileage (i.e. 50,000+) or excessive deposits, remove and clean the oil pan and oil screen.
- Refill crankcase with new oil. NOTE: Extremely dirty engines require a repeat of directions 1 to 4.