Prolong’s Transmission Treatment is available in a handy 8-ounce bottle and offers an “anti-friction metal treatment” with a formula that is said to coat metal surfaces inside manual and automatic transmissions. The fluid’s molecules bond to the inside surfaces to create a protective layer that the company claims can reduce friction and heat, helping transmissions shift smoother, and last longer while preventing costly, premature repairs to the vehicle’s transmission.
MSRP: starting at $12.99
800-540-5823, www.prolong.com