Wynn Formula Gold Engine Treatment will solve all your engine needs. This high-performance treatment not only keeps your engine clean, but also reduces oil consumption and emissions. The dual action formula has been developed to reduce wear by 40% and increase compression by 30%, in addition to preventing the new oil from thickening. It is compatible with all types of engine oil, does not contain solid particles and will not damage catalytic converters. By reducing oxidation, friction and wear, this treatment will help extend the life of your engine and keep it running smoothly.Directions:Just add to the engine oil without overfilling it. We recommend that you do this immediately or immediately after changing the oil.A 500ml bottle handles 4 to 6 liters of oil.