Choose the most appropriate size Flushing Oil Concentrate for your particular need. Various size options are available –

Flushing Oil Concentrate is added directly to the engine oil at time of oil change.

8 ounces of Flushing Oil Concentrate treats a maximum of 16 quarts (4 gallons) of oil for the Initial/Dirty Engine concentrated flush. This is usually enough to treat cars or SUV-type vehicles.

16 ounces of Flushing Oil Concentrate treats a maximum of 32 quarts (8 gallons) of oil for the Initial/Dirty Engine concentrated flush. This is usually enough to treat small to medium trucks, RV’s and some machinery.

32 ounces of Flushing Oil Concentrate treats a maximum of 64 quarts (16 gallons) of oil for the Initial/Dirty Engine concentrated flush. This is usually enough to treat large trucks and machinery.Flushing Oil Concentrate different sizes and bottle choices