I didn't think it would help my car much but I was wrong! It didn't fix the problem with my trance, but it improved it by helping me narrow down the list of things that could be wrong with my trance. My '98 Civic had trouble shifting from first to second and shook as it went from 20 to 50 mph. Both problems decreased immediately thereafter, leading me to believe that I had probably burned my transmission oil and painted the inside of my gearbox when my car recently overheated (just before the problems started). Now I know how to fix my car and I will use the rest of this bottle when I change the fluid. Would buy again! Edit 9-9-2015: The tremors returned after a few weeks. I bought the Platinum Brick and Mortar Version from Dr. Fix tranny instant shudder. That also helped for a while. I finally broke down and bought a gallon of ATF to do my first fluid change and now the problem is gone. I attribute this to the presence of this additive which helps the new fluid perform better. I still have the rest of that bottle and intend to put it in at my next and final fluid change to make my '98 Civic what Honda says it should be. However, the hard layer never returned. I believe this product (and two others from the same company) is directly responsible for keeping my transmission running when I change the oil as it is the case on most high mileage vehicles that I have changed the transmission oil on . I wish this would fix the problem of my transmission shifting into gear when I hit the gas all the way, but that's probably the result of 261,000+ miles and not something the liquid additive will solve. It's a different story. Bottom line: I would definitely buy it again and possibly buy another bottle just to make sure my trans liquid is good. I added a star because the stuff does what it's supposed to!
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