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Whatever additive you use it not going to solve your rough shift. At least not for long. Additives such as Tarns-x and Lucas could have a temporary effect on the shifting of the transmission, but your tranny is wearing out these additives can not keep it alive for too long.

By the way, a very common problem of a hard shifts is a bad motor mount. It is a very likely cause and much cheaper to repair. Have someone very its not your case.

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Q: Is an additive such as Trans-x good for smoothing out a rough shift?
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Is an additive such as Trans x good for smoothing out a rough shift?

Whatever additive you use it not going to solve your rough shift. At least not for long. Additives such as Tarns-x and Lucas could have a temporary effect on the shifting of the transmission, but your tranny is wearing out these additives can not keep it alive for too long. By the way, a very common problem of a hard shifts is a bad motor mount. It is a very likely cause and much cheaper to repair. Have someone very its not your case.


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