(100% Original DashOil Dash Oil) Premium Engine Flush DashOil Premium Engine Flush 1.Fill in DashOil Premium Engine Flush together with old engine oil. 2. Then start the engine/motor for 5 - 10min as usual, let the engine flush clean up the exterior of engine. 3.Finally change the Engine Oil ( prefer DashOil Engine Oil). Improve Fuel Efficient Ready stok 100% Original DashOil