As a guide when used as an engine additive, Bell Hammer Seven is recommended for extending the life inside the engine and alleviating vibration in general automobiles.
Bell Hammer Gold also has the effect of prolonging the life of the engine and preventing vibration, and is preferred by users who frequently use high rpm. However, Bell Hammer Gold has a high product price, and it is desirable to continuously add the Bell Hammer series to engine oil, so we recommend Bell Hammer Seven, which has excellent cost performance.