You can also use Olive Oil instead of Castor, which level of virginity may not be important. We also tried a Murphy's:olive Ol: windshielf washer antifreeze lube that worked quite well too. These were common iongredients many people have at hand. I like the Olive Oil as that comes out of my wife's budget, along with the Murphy's.
: I like the castor as it's a very high temp lubricant, but it is relatviely expensive.