Choose the most appropriate Flushing Oil Concentrate size for your particular need. Various size options are available –
Flushing Oil Concentrate is added directly to the oil immediately prior to the oil change. It is not recommended to be added to the oil and ran for extended periods of time. For the very best results, we recommend the following treatment rates –
Initial/Dirty Engine concentrated flush: add Flushing Oil Concentrate to the engine oil at 0.5 fl oz per quart of clean engine oil (12.5 mL per liter of engine oil).
- 8 fl oz of Flushing Oil Concentrate treats a maximum of 16 quarts (4 gallons/19 liters) of oil
- 16 fl oz of Flushing Oil Concentrate treats a maximum of 32 quarts (8 gallons/38 liters) of oil
- 32 fl oz of Flushing Oil Concentrate treats a maximum of 64 quarts (16 gallons/76 liters) of oil
- 64 fl oz of Flushing Oil Concentrate treats a maximum of 128 quarts (32 gallons/151 liters) of oil
- 1 Gallon of Flushing Oil Concentrate treats a maximum of 256 quarts (64 gallons/302 liters) of oil
Basically, the initial, hard-working, concentrated flush breaks down and suspends heavy, baked-on sludge – the sludge that causes piston oil-rings to block up and stick in the grooves, oil pumps to reduce pressure, and oil galleries to be restricted. It also dissolves the clumps of hardened sludge on the oil pan and other crankcase components. It assists in the breakdown of hard carbon on the piston skirts, lower compression ring and cylinder walls.
Continuing maintenance oil change flush (i.e. subsequent maintenance oil changes after the initial concentrated flush): add Flushing Oil Concentrate to the engine oil at 1/10th fl oz per quart of engine oil (2.5 mL per liter of engine oil).
Instructions:
INITIAL TREATMENT/DIRTY ENGINES
Bring engine to FULL operating temperature. Drain old oil and refill with new, clean oil (this can be inexpensive oil for this purpose). It is a good idea to replace the oil filter/s at this time as possible heavy contamination of the existing filter may occur during the flushing process. Operate the engine to warm up the oil again, then add Flushing Oil Concentrate to engine oil at 0.5 fl oz per quart (12.5 mL per liter) of engine oil. Run the engine at a fast idle, stationary, for 45 minutes. For most small and medium size engines, this means 1500 – 2000 RPM. For larger size engines (e.g. over 9.0 liter/550 cubic inch engine displacement), run at about 1200 RPM. After 45 minutes, stop the engine and drain the engine oil while the engine is still hot. Replace oil filter. Refill with quality engine oil.
Example:
- 5 quart/liter oil capacity = 2.5 fl oz (60 mL) Flushing Oil Concentrate
- 5 gallon (20 liter) oil capacity = 10 fl oz (250 mL) Flushing Oil Concentrate
- 10 gallon (40 liter) oil capacity = 20 fl oz (500 mL) Flushing Oil Concentrate
CONTINUING MAINTENANCE
Bring engine to FULL operating temperature. Add Flushing Oil Concentrate to existing engine oil at 0.1 fl oz per quart (2.5 mL per liter) of engine oil. Drive/operate normally for 30 – 60 minutes, then continue with normal oil change while the engine is still hot.
Example:
- 5 quart/liter oil capacity = 0.5 fl oz (12.5 mL) Flushing Oil Concentrate
- 5 gallon (20 liter) oil capacity = 2 fl oz (50 mL) Flushing Oil Concentrate
- 10 gallon (40 liter) oil capacity = 4 fl oz (100 mL) Flushing Oil Concentrate
Occasionally, on an engine with years or decades of sludge build up, a second follow up concentrated flush may be required soon after the initial flush (600 – 1200 miles, 1000 – 2000km). It is suggested to add Flushing Oil Concentrate to clean oil (as per instructions for the “Initial Treatment/Dirty Engines”), at a rate of 0.25 (1/4) fl oz Flushing Oil Concentrate per quart of engine oil (6.25 mL per liter of engine oil). Operate the engine normally for between 4 – 6 hours, then drain the oil while hot, replace oil filters, and fill with quality oil.
Detailed information can be found HERE.
(32 fl oz = 946 mL, 1 liter = 33.8 fl oz)