A special shock absorber oil should be added. The shock absorber oil is compressible oil, which will increase the cushioning performance of the front shock absorber. The density of the shock absorber oil is small and can be appropriately compressed. The density of the hydraulic oil is not compressible. , So absolutely can not add hydraulic China Electric Scooter Shock Absorbers Suppliersoil, shock absorber oil ten yuan a barrel, the larger motorcycle repair shops are available,