I added both the transmission and engine Tribotex simultaneously.

My HHR has just over 208k miles, with the GM 4T45E automatic transaxle and the 2.4L Ecotec 4cylinder engine.

Neither engine nor transmission was particularly causing me concern. Engine would start right up, decent power, smooth operation. The transmission functioned well, though inconsistent in when it would shift smoothly. Shifts were quick, though a greater tendency to jerk into the next gear. Torque converter lock up could be harsh, especially with more throttle.

I felt it an ideal testbed for the new Tribotex transmission formula. Having already used the engine treatment, on another vehicle.... I knew the results were going to be astounding.

I made myself wait until the 500mile break in period was done, before writing this review.

I'm going to gush about this marvelous invention. I was ready to give a five star review at 200miles. It completely smashed any thought of what my car was going to become, after installing the treatments.

Transmission: huge improvement! Like 90% new. I think if I changed out the solenoids... I'd basically have a new transmission. The shifting is almost entirely smooth and imperceptible, save for the change in engine torque. The torque converter lock up, at any engine speed or throttle input, has became entirely smooth, with very occasional glitches. Even engaging the transmission (going from park to reverse, then reverse to Drive) has absolutely no feel to it. Downshifting is so quick, it's almost like driving a CVT.

And

Engine: worlds of improvement! in terms of start up feel, vibration, power delivery (this engine has never felt particularly powerful, merely adequate. After the treatment, it pulled like I had just added turbo charger... Even with the car loaded with my camping gear) even in day to day driving, the engine is much less strained. I can keep the rpm's around 2k and get up to speed effortlessly. I also noted that it would cool off much quicker, say after coming the top of a hill.

Anyone who is dreading a massive repair bill, check out Tribotex first! I estimate that doing... nothing, save for fluid changes, my transmission and engine have another 150k of life, At least.

Thank you for this amazing product!

I ordered the Transmission and Engine treatment for my son's 97 Accord with 313,000 miles on it. He put it in before he drove back from LA to the Seattle area and said it's never run better. He could tell within 100 miles that the tranny and engine were smoother and the tranny shifted better. We run TriboTex in all our vehicles(4) and love it. Great Job guys!!!!

I have a 1994 Acura Integra with 223k miles (automatic transmission) that wasn't shifting precisely. Shifting was starting to get loose so I purchased this product around June 2020. Only 100 miles after adding it the transmission feels almost new again with the shifting much tighter, faster and quieter (I will make an after video recording at 500 miles). I am sold. This product is going to greatly reduce the number of transmission replacements once it becomes widely known. Great job. I will treat all of my future cars with 175k miles with this product.

What a difference! I added the Original engine treatment about 2k miles before adding the transmission formula. I thought the engine treatment was fantastic and bought more for each of the four cars in our household with similar results in each. (Infinity, Nissan, Honda, and Audi). I used the transmission formula in my daily driver ( Infinity, 126k miles ) and it doubled my results, at least. The transmission treatment was the right - cross in a one-two punch combo that put an end to the lagging performance I didn't know was missing and bring my car back to life. I immediately felt faster and smoother shifting that only got better as it fully settled in. I saw an improvement in miles per gallon with the engine treatment but even more with the transmission formula. I wouldn't hesitate to recommend either product but, used together, Holy Smokes! Thanks, TriboTEX

It would sure be nice if Tribotex would sell the tools needed to install their product in the newer transmissions that do not have a dipstick. You have to pull a plug on the bottom of the transmission to add the Tribotex additive to your transmission, so how do you accomplish this? Please get back to me and let me know.

I asked a question earlier if you could use a second dose if after a period of time it did not correct the shudder, completely. I did not get an answer...
Hold off, it's been a 8 days and my wife's shudder is completely gone. You send all your nay-sayers to me and if you don't believe me, my wife will. You just fixed her baby.
Thank you TriboTEX

What more can I say....added to the automatic tranny and almost instantly noticed the absence of background white noise which was present before adding....the transmission has simply quieted down!! After a day or two the engine ran even more quiet and smooth (less drag from the tranny); also noticed the gas consumption has gone down.

All in all the treatment works! I am buying for for my other cars

I added TriboTEX transmission treatment shortly after changing ATF fluid at 93,000 miles more or less as a preventive treatment because I do tow a Ranger bass boat. With no change in driving habits in and around my area and no change in type of fuel that I use, I have noticed a 0.3 mpg improvement in fuel economy. I have not yet done any towing since adding the treatment.