Where exactly do I add oil to VPI classic motor

Again, I can't speak to specifically to the Classic, but most VPI pulley's are either pressure fitted (older tables) or held in place with a grub screw (newer tables) which requires an allen key to loosen and adjust. Nothing complicated about removing and reinstalling a VPI pulley.

Mine do not look like screws that can be removed with an allen key. If so, it'd be the smallest allen key I've yet to see. They look more like hollow bolts with tiny screws inside that require a very, very small screwdriver of some sort to unscrew them. Regardless, the question is not whether you can do it, but whether you should do it. In my opinion it's completely unnecessary.

That sounds about the right size and there should be three grub screws. You are right that it is not necessary to remove the pulley to lubricate the motor, but you made it sound that by doing so you are upsetting the balance of a Swiss watch.

I know Classic owners who adjust the pulley height to ensure that the belt runs in the groove cut out of the newer platter to help eliminate belt creep. End users have been changing VPI pulleys for years, whether to install a dual 33/45 pulley, or to change the pulley to compensate for a change in platter dimension.

In any event, the only real consensus is how poorly VPI writes their manuals.

The brass collar I am speaking of is hidden below the pulley. The collar is held onto the shaft with a single grub screw. This collar is on the spindle to set the height of the pulley and you cannot see it with the pulley installed.

Taking the pulley off is not that big of a deal in my personal opinion. You simply loosen the grub screws with a regular allen wrench and slide it off. It is a tight tolerance fit so, there isn't any play between the pully and shaft. This means that it is almost impossible to re-install it the wrong way. You slide the pulley back down the shaft and make contact with the brass collar. Then you tighten the three grub screws. It's not that delicate of a process to do. Like I stated earlier, The gap under the pulley was too small to even get a needle through. This is why I had to take it off. There was no other way to get the oil in there. I have had no problems since doing it this way and my motor is silent now.

Actusreus,
I agree with you that, if there is enough space under your pulley to pass a needle through, then there is no need to take the pulley off. On your table there was enough room to do this. On mine there was not enough room. I don't think my method is correct and yours is incorrect. Both ways will work to achieve the same end result. I thank you for your suggestions as I would not have thought to use a syringe to apply the oil. Using the syringe was very easy to do and did not make a mess.

There is clearly more than one way to do this. In reality, you don't even need to take the pulley all the way off. You can just slide it up enough to expose the brass collar underneath. Then you can easily slide it back down after you have applied the oil

In view of the analog care and feeding that is necessary to properly mount and allign a phono cartridge, it is remarkable how reluctant some people can be to remove and reinstall a simple VPI pulley and brass collar requiring no more than an allen wrench and a brain stem.