Jilcat Proline CVT Supplement stops the shudder. Jilcat CVT Supplement also promotes smoother function, reduces operating temperatures and noise. Coolant from the radiator is seeping into your transmission every second you are driving. That coolant mixes with the fluid, settles and burns onto hot metals and starts the deterioration of performance and soon components. Jilcat Proline CVT Supplement gets UNDER the burned on gunk and removes it from the metal surfaces. Don't replace your CVT without first trying Jilcat's CVT Supplement recommended for use in all CVT applications. Nissan, Ford, Toyota, Subaru, Mitsubishi and others.