LIQUI MOLY gearbox oil leak protection agent that reduces oil loss, strengthens and restores rubber seals in the transmission. Suitable for all types of transmissions with mineral oils or synthetic oils, especially effective on older or worn seals to prevent leaks and extend the life of the transmission. Usage One additive package is for 1l of gearbox oil. Use 2 packages for large gearboxes. The product can be added to the transmission oil at any time, for better gearbox performance results, add the product at each oil change.