This is in very good shape and moves smoothly. If your wiper is acting jerky then all the lube in the world will not help. The teeth in the assembly are worn out and will need to be replaced.

Or you can just bolt this one in! The part number on it is A201 820 4842.

Asking $50+ shipping from Oklahoma. That might be as much as $20 since this is light but large.

I can e-mail photos.