Well I'll be dipped in mud! Your product works like a charm. 136000 miles and the trans started to slip. I thought I was looking at a two to three thousand repair job or replacement. I want to keep the truck because everything else is in such good shape. What did I have to loose except a few bucks anyway? I removed an equal amount of exsisting trans-fluid and replaced it with your magic elixer and BAM!!! less than a mile down the road when I did a road test the problem was solved. Today I gave the truck a real workout and it actually runs better than it has in the past year. Great product guys...maybe your not charging enough for it, you saved me a few grand. Thanks. Keep up the good work.