I have a 1990 Corvette which I have owned 25 years. I replaced 4 transmissions and this time the 4th one started slipping in high gear and I had enough. These are coming straight from GM. I decided to try your Transmission Fix and read works “immediate”. I thought wow, that’s a bold statement. I followed the directions, took the car out and ran it through all the gears. It actually shifts better then ever. Love your PRODUCTS!!!.

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