Good gearbox transporting tip:
Ged a 'homebrand' or 'savings' brand of cling wrap, and mummify it.
Add a few layers of newspaper if needed.
It will be 100% sealed, can be stored for ages, no leakages, no water gets in, no black fuzzy wuzzzy spiders. Also your hands can stay clean whilst picking it up & moving it etc, wont stain carpet in the car etc....