This is a real, honest review by someone who's actually bought and tried this product. I'm not compensated for my findings, I have no affiliation with the company, LubeGuard or it's product other than being a consumer and purchasing it for my own personal vehicle. I am a self-proclaimed shadetree mechanic. I do most of my own car maintenance and repairs in my driveway. I'm experienced with everything from basic oil changes, tune up's, even timing chains, lifters, fuel pumps, etc. I've always been too broke (cheap?) to hire professional mechanics for most things.

My daily driver car, a 2007 Ford Five Hundred/Mercury Montego has about 147,000 on the clock. I really love the car, it's still a nice ride for it's age and milage. Naturally my heart sank when I experienced a "shudder/studder/hesitation". I once thought it was ignition related, so I began pulling spark plugs and coil packs in hopes of finding the culprit. I cleaned the throttle body, I cleaned the MAF sensor, I dosed the fuel with a heavy dose of Techron and Seafoamed the intake manifold. Nothing helped. Nothing really stopped it.. Until now.

What I thought was ignition/fuel related turned out to be transmission related. Specificially, the torque convertor. I was experiencing TC shudder - and knowing how expensive transmission shops are, my heart sank a little. Ultimately TC shudder is a mechanical problem and the only real "fix" is to replace the faulty part. I could feel my wallet getting lighter already. Then, I stumbled across this product. For less than the price of a large pizza, I bought the "two tube" pack with the thoughts of dosing it hot and sending it. What happened next defies my logic as a shadetree mechanic. Never in my life have I ever experienced a "fix in a bottle". This stuff though.. Ha, let me tell you. Blew my mind.

It worked, atleast, on my drive to work this morning it did. Theres a certain spot in town that my car always, ALWAYS shuddered. Always. The speed, the load on the engine, everything in this location was always just right to initiate the hesitation. This morning though.. I felt nothing. Just a smooth cruise right on into the office.

Now I'll go on record and state this is NOT the only thing I did. I also simply drained the transmission (did NOT flush, simply drained what was in the pan), refilled with fresh clean fluid, and two tubes of this stuff. I don't imagine the transmission fluid alone helped it. I suspect the magical red unicorn blood in the tubes played a part, and I'm cool with that.

If you're experiencing transmission shudder.. Do yourself a favor and try this stuff. If it works, you've just bought yourself some time with a bandaid that actually works. If it doesn't, atleast you know you tried something that has an actual track record of providing results.

UPDATE: Approximately 700 miles in and still smooth as silk. Mind is still blown.

UPDATE: Approximately 1500 miles in, still perfect. Zero sign of shudder.

UPDATE: Today is 9/19/23 and I'm sitting at 152,000 on the odometer. Approximately 5,000 miles since the Shudder Fix. The car is still driving and shifting just fine, every bit as good as that first drive with it.

Brand	Lubegard
Rating	4.5 (2938 ratings)
Price	$14.99
Category	Additives

Lubegard 19610 Dr. Tranny Instant Shudder Fixx 2 Ounce 2 Pack