Lucas Hi-Performance Transmission Fix is a 24-ounce bottle designed to improve the performance of worn transmissions. This non-solvent formula effectively stops slips, hesitation, and rough shifting, while also sealing most leaks. It is suitable for use in light-duty manual transmissions to enhance shifting ease and extend transmission life. The formula works by lowering operating temperatures and reducing foaming, and it can be added directly to existing transmission fluid without the need to drain any out. For larger or more worn transmissions, using a second bottle may be necessary to achieve optimal results. Model Number: LUCA10009