Hi Suzzy, the issue with older machines is not only the grease, but also the grease wicks, which need replacing as they're likely 50+ years old. The wicks--which are what absorb the grease, and then transmit it to the motor as it warms up--get old and crusty and are no longer able to transmit grease.
If you have a 201-2 with the potted motor (i.e. not a motor with a belt, like the 201-3) there are instructions for how to remove the grease wicks here:
http://vssmb.blogspot.com/2011/12/ho...r-part-10.html
There are instructions for how to replace and re-install them here:
http://vssmb.blogspot.com/2011/12/ho...art-19-re.html
And to do that it's much easier to take the motor off of the machine. The instructions for that are here:
http://vssmb.blogspot.com/2011/12/ho...or-part-8.html
These specific links only apply to the 201-2, of course.
hope that helps,