What grease do you use?

[atch]

I didn't want to get two issues going in the same thread so here's another lube question.

It's time to do some lubing on my "new" 1930 sedan.

I have a couple of grease guns holding "who knows what" grease.

Is there any problem with just using what I have or is there a recommended grease for the multitude of points that need greasing?

I'm not opposed to buying another grease gun and new grease if that's what I should do.