Lo and behold the leak stopped almost immediately.
My daughters Highlander 2001 over 100k miles was leaking badly transmission oil. Took it to mechanic and cost to do work was pretty high. We decided to hold of the job and the mechanic suggested we use this product meanwhile. We did, and lo and behold the leak stopped almost immediately and now we can park it inside the carport. We couldn’t do this before because of the big splash of the leak. Thank you Lucas stop leak…It Works!!