I cannot believe that anyone ships an assembled motor vehicle (or any complex piece of machinery) covered with cosmoline today. Any grease of any type would be very difficult to remove from all the nooks and crannies of formed/cast metal or the entire assembled machine. Perhaps a light oil that is designed to burn off but nothing heavier. There are other easier to deal with corrosion preventative measures available, such as vapor corrosion inhibitive paper and vacuum bagging.The motorcycles that are up for sale are warehoused in their pre-sale condition. They are usually shipped dry and covered in cosmaline to keep them from rusting while being transported oversea and sitting in a crate.
If you really think cosmoline is still used, talk to any veteran GI who had to clean his cosmo protected M1 in WWII.