AMSOIL Continuously Variable Transmission Synthetic Fluid CVTs require a unique transmission fluid with specialized frictional characteristics designed to ensure the belt or chain remains in contact with the pulleys without slipping. AMSOIL Synthetic CVT Fluid provides outstanding metal-to-metal frictional properties and excellent protection and performance for CVTs throughout vehicle manufacturer-recommended drain intervals. Continuously variable transmissions (CVTs) create unlimited gear ratios using a belt or chain running between two variable diameter pulleys. CVTs require a unique transmission fluid with specialized frictional characteristics de