Only put it in two days ago, but what a DIFFERENCE! After owning a 2005 PT Cruiser Limited for 11 years, it was deemed totaled when someone carelessly pulled right out in front of me across two lanes of traffic. There was no way I could stop my vehicle, and my dearly beloved car was considered a total loss. It never had any transmission issues, so I had no need to use this product.

About a month ago, I bought a "new" PT Cruiser Limited Edition. It is a 2001, and has a bit over 100,000 miles on it. I was leery to get a car with that many miles, but it looks like someone took good care of it.

When I test-drove it, I noticed it had quite a "shudder" when shifting from 1st to 2nd gear. It also shuddered a bit when braking. Heard a bit of rumbling, and noticed that it did not drive smoothly, as my other PT Cruiser had. I decided to get it anyway, as it was the right price, and looks great.

After driving it for a couple of weeks, I decided to try to do something about the shudder. I took it to our mechanic for an oil change and general inspection. He took care of some minor issues, and told me that it was going to need transmission help sometime in the future. He said that I could probably delay transmission work, if I drove it "like a little old granny". I did not intend to drive it harshly, anyway, but noted his advice and have been driving it very, very gently.

Despite that, the shudder when going from 1st to 2nd, persisted, and I noticed it struggled a bit when shifting into a higher gear. Rather than plunge into a transmission fix, as I only drive a few miles going from home to our business, I ordered two tubes of the Lubegard 19610 Dr. Tranny Instant Shudder Fixx. They arrived promptly, and I put both of them in two days ago.

The first day, I did not notice any difference. The SECOND day, I felt like I had a new transmission. The car drives smoothly, does not shudder, and shifting is gentle and barely noticeable. Hard to believe that something in a little tube could make that much difference, but it HAS! I am a believer, and it only took two tiny inexpensive tubes to occasion the change. I am very, very impressed!

Note: It is too soon to tell, but it sounds like the rumbling has died down, and my gas gauge has not moved much. In the month that I have owned the vehicle, I have put 3 tanks of gas in it. Since I put the Tranny Instant Shudder Fixx in, the gas gauge has stayed fairly steady. There may be no connection, but it appears that my gas mileage will be better, too.

My story. I have a 2003 Chevrolet Blazer with 155k miles. After having my radiator fail (everything came off - every line, it was a mess) I had issues. Turns out that my transmission line was not on right. Took it in for a transmission fluid change and new filter. It shuttered and stammered all weekend. After reading a lot of web forums, I heard about this stuff. I was extremely skeptical, but it does work - and fast! My car is shifting normally now and the revving isn't as bad (I'll probably have to write an update once I have ~200 miles in). For the price, I'm impressed.

Worked within a few minutes in my fj cruiser, had a shudder between 1st and 2nd and now it's gone!

i I put it in my merc 190e transm, my 1st to 2nd shift much smoother as well as 2nr to 3rd and 3rd to 4th gear , i can now step up on my modulating valve adjustment on the key-way by about 1/4 turn so that my gearchange be spot on,as well as reset my kickdown cable by 1-2 clicks,

Transmission was slipping in between 2 and 3rd and when going into overdrive. Changed the fluid myself and added this. No more slipping. Product worked as described. Very reasonably priced.