# 1991 Toyota Previa - Problems with reverse **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** toyota\ **Created:** [June 14, 2019, 1:58am UTC](https://community.cartalk.com/t/1991-toyota-previa-problems-with-reverse/142214 "2019-06-14T01:58:36Z")\ **Posts on this page:** 1\ **Showing post:** 7
**Author:** ![JoeMario](https://avatars.discourse-cdn.com/v4/letter/j/3bc359/32.png) [@JoeMario](https://community.cartalk.com/u/JoeMario)\ **Post date:** [June 17, 2019, 10:15am UTC](https://community.cartalk.com/t/1991-toyota-previa-problems-with-reverse/142214/7 "2019-06-17T10:15:29Z")
I agree with the previous replies that your transmission sounds like it’s on it’s last legs, with hardened-aged seals being the likely problem. Since you have nothing to lose, you may want to try a can of Berryman’s Chemtool. A transmission expert who used to frequent this site (transman618) used it often in aged transmissions to soften up hardened-aged seals. It’s not a product built for transmission use, but it’s reputed to help. Here’s one thread where he discusses it. > [@Substitutes for Berryman's B-12 in transmissions](https://community.cartalk.com/t/substitutes-for-berrymans-b-12-in-transmissions/69537): > > A few days ago I submitted a question about my transmission failing (1994 Oldsmobile Cutlass Ciera V6 with automatic transmission) and received replies from transman and another party to use an additive from the Berryman’s B-12 line of products. I presumed that I could go to a local auto parts store and find the appropriate product. I found a few Berryman B-12 products, but not one specifically for transmissions. So I contacted the company and their reply was that they had discontinued their … There are more. Just search this site for old threads about Berryman’s Chemtool and/or threads from transman618. Consider it a bandaid, especially where you have nothing to lose. --- _[View the full topic](https://community.cartalk.com/t/1991-toyota-previa-problems-with-reverse/142214)._