The conversion of the Fiat 126p driveshaft seals was aimed at reducing oil leaks from the gearbox. The oil level in the Fiat 126p gearbox depends on whether the oil seals in the driveshaft is present. When replacing the f126p driveshaft sealants, you can use my idea of converting the driveshaft sealants. I also recommend that the simmerings be replaced.