Lubegard 19610 Instant Shudder Fixx, 2 oz.

I have to say I was skeptical as to the effectiveness of this stuff but I have been pleasantly surprised. It took a few drives to really show but box seems much smoother and no obvious signs of converter judder anymore! Definitely worth a try 👍

Jeep Grand Cherokee 2011. VM Motori V6 diesel, NAG 1 gearbox. If you have one of these you will know about the strange lumpy acceleration on low throttle that can occur and once it starts it just carries on. So after a year of trying to stop it, dealer ATF and filter change, updated software on the gear box. Changing all drive train fluids, engine retune etc. nothing works long term, so I stuck a tube of this in. Half an hour of driving later, the gearbox is back to behaving itself. Can't recommend enough, stick it in your auto box, you won't regret it.

Used in Land Rover LR3 with slight judder when accelerating in 3rd gear within 10miles from adding this to the gearbox fluid the juddering has stopped, well pleased with the results so far

Great stuff this, totally stopped the tcc judder in my x350, letting me carry on using the car without the worry of stressing the gearbox while it gets booked in for a replacement torque converter. I don't think this stuff is a permanent fix though.

Does exactly what it says

Sorted my Volvo s80 D5 autobox within 20 miles after a full fluid change, bottle of this and some lubeguard instant Shudder fix. Brilliant product.

I had some automatic gearbox/torque converter vibration at around 25-30mph on my 2007 Honda CRV. After reading many reviews about this stuff I decided to buy it and give it a try as it’s the cheapest option by far. I wasn’t very optimistic to be honest, but since I added it I haven’t had a single incidence of gearbox judder to this day. Definitely recommend it.

Get some, but only if you want to, of course.

Great product for Honda automatic. Shifting like a dream.

otimo produto ... resolveu

For those wondering, I'm just an average Computer Nerd kind of guy, not really a car guy, but I do most of my own maintenance on everything! Being a very Technical Computer guru, I'm always cautious when it comes to "Quick Fixes in a bottle" kind of stuff. I guess that is the analytical side of me kicking in all the time and it usually serves me well in the computer world, so I really didn't have much hope for fixing my 2001 Lincoln Town Car with about 91,000 miles on it. The car started "Shuddering" a few years ago, and like most folks, I had to eventually replace a "COP, Coil on Plug" device. About 8 months later, the Shudder started again, and this time a dash trouble light came on and the code indicated a bad COP device, so I had my mechanic replace another one that was found to be bad. At $200 buck a wack, this was getting expensive, so when this Shudder came back a third time, I decided to replace all of them as well as new plugs and wires. This worked great for a few months but then I got a "Different" kind of Shudder, and it only seemed to happen when shifting at speeds over about 35 MPH, and applying a little more gas pedal did not get rid of it like it did with the original COP based Shudder I experienced. In fact the engine was running smooth as glass, and it seemed like the car was trying to go into OverDrive locking transmission mode when this happened, so I was really confused. Lifting off the gas pedal then getting back on it seemed to make it stop, but then in a few minutes it would start again, particularly when approaching a slight grade up in the road. This car is used mostly in town, so speeds are slow, around 30 - 50 MPH when this happens. Out on the highway, the problem is much more pronounced. It seemed like the OverDrive would engage and then disengage very quickly and often would feel like you were driving over the little rumble bump strips on the side of the interstate at high speed. Doing a little research on the web led me to try this product as it made the most sense, and was certainly reasonably priced. So I ordered it from Amazon, and incredibly, it arrived the same day!!!! (Great Job Amazon!!!!!) I kind of stuck it in the corner for a few days, and this afternoon when my wife came home from the grocery store, she was complaining about the Shudder, so I went out and poured in one tube of this "Instant Shudder FIXX" into the transmission via the dip stick filler pipe and decided to just take the car for a spin and see if this was all it was cracked up to be. I don't impress easily, but WOW !!!!! WOW !!!!! WOW !!!!! I pulled out of the driveway onto our two lane 35 MPH road and drove about a mile with NO SHUDDER!!!! I turned onto HWY 17-92 and headed for Interstate 4 which is about 4 miles away. Speed limit on this road was 40 for about 2 miles, then 50 for another 2 miles. I got on I-4 heading East and accelerated off the ramp onto the highway, set the cruise control for 72 MPH, and let her fly!. After encountering several hilly areas where the car would have to work a little to get up, I exited the highway and took a few backroads all the way back home. Speeds ranged from about 30-55 MPH. This car shifted and ran smooth as silk!!!! Not a Single Shudder or pause during shifting during the entire trip!!!! I'm Absolutely Astounded with how well this product works!!!! Like I said earlier, I am very pessimistic when it comes to Miracle "Fixes in a bottle" products, but honestly, I still can't believe how fast and how well this product has worked in my old Lincoln Town Car!!!! I figured I had nothing to lose, and really didn't want to spend money for a whole new transmission for this old car and was going to trade it in for something else because the erratic shifting was just driving me crazy, particularly out on the highway. Wow, what more can I say? Anyway, if you have an old Lincoln Town Car that has a similar Shuddering problem and you are sure it's not the COP, Plugs or Wires, you owe it to yourself to give this product a shot!!!! If anything changes, I'll definitely update this post, but for now, this car is running as good as it did the day it left the showroom!!! Truly Amazing!!!! Thanks Lubegard for creating the "19610 Dr. Tranny INSTANT SHUDDER FIXX", This is a FABULOUS PRODUCT!!!!!!!!

Made a lot of difference to the knocking and studder

Mi coche comenzó a dar pequeños tirones cuando circulaba a baja velocidad y pisaba acelerador, las RPM oscilaban, como si el convertidor no estuviese funcionando. En un grupo de Facebook me dijeron que el problema venía de los solenoides que controlan el embrague del convertidor de par y que probase este producto. El primer día fue un poco decepcionante, pero después de 200 kms era otro coche. No había tirones ni oscilación de las revoluciones. Tan fácil como echar el contenido en la caja de cambios y dejar que haga su magia. Recomendable al 100%. Recomiendo visitar la página del fabricante, tienen productos para cajas de cambios y creo que es muy interesante. En cuanto el producto vuelva a estar disponible, compraré otro vez porque creo que puede volver a pasar, ya que creo que la reparación definitiva sería cambiar los solenoides de la caja de válvulas, pero si puedo alargar el trauma económico de cambiar la caja de válvulas, mejor. He tardado más de dos meses en escribir la reseña porque quería asegurarme de que el producto funciona realmente, así que ahí va mi opinión.