Lubegard 19610 Instant Shudder Fixx, 2 oz.

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.

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

Does exactly what it says

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.

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

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.

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.