Hot Shot’s Restore Auto Transmission Additive, Tested... Surprising Grip Boost InCar Parts Showdown We recently tested the Hot Shot’s Secret Shift Restore Automatic Transmission Additive in our InCar Parts Showdown, and the results were Unexpected. Ours cars had been experiencing soft shifts, but after adding this 16 fl oz bottle, the improvement was noticeable immediately. The transmission felt more crisp, engaging smoothly with less slipping, even under moderate负载. The bottle’s concentrated formula worked quickly, and we appreciated its convenient size for regular maintenance. We didn’t expect such a dramatic grip boost, but the smoother performance confirmed this additive’s effectiveness for restoring fluid condition. It’s a small investment for significant results, making it a standout choice for us. We’re impressed with how it revived our transmissions with minimal fuss.