Quartet gbc ShredMaster 950S Strip-Cut Shredder "cc55" Questions

Taking the top off a Shredmaster cc55 I'm trying to take the top off a Shredmaster cc55 to take a look at the blades that seem to be bent (there is a really high whining noise and there is no paper ...

I have GBC Shred Master CC55 and was wondering what oil I should buy to oil it? Can't find the owner's manual!! Any type of common "shredder oil" will do ..most stationary stores carry it.