Car owners in search of a quick solution for transmission shudder will find it in this compact Lubegard product. The Instant Shudder Fixx is a concentrated formula that works with all synthetic and traditional automatic transmission fluids. 2 ounces may sound like a small amount, but the friction modifier formula delivers immediate results and solves shudder issues that can easily ruin your day. This additive can be used in all automatic transmission systems with a few exceptions including CVT and dual clutch transmissions. The compact tube is pricey when compared to other additives, but the instant shudder fix is highly rated and recommended so it is definitely worth the money.