The wife's Honda had a fluttering in the transmission when shifting between gears. It is an automatic. With 81,000 miles, we thought it may be time to have transmission rebuilt. I decided to try Lucas Transmission Fix after what I read on your site. I removed 28 oz of transmission fluid and added Transmission Fix. It is a little of a pain since it is very thick but a squeeze bottle with a clear works good. Took her car out for a test drive and no flutter around shift points. Thank you, I like the idea of paying $13 a bottle than $1,000 for rebuilding a transmission. Great Product!