Should I choose Bellhammer Seven or undiluted type if I want to add it to the engine oil and gear oil of the scooter?

For scooters, if you feel that the mileage is long and there is a lot of vibration, Bell Hammer Seven is recommended.
If you are looking for comfort and speed, we recommend adding the LS Bell Hammer GOLD series. (This is also very popular in scooter races)