this is an insert from Wolfgang about steering box lubrication.
"Fill the box with Power Punch if you can find it, if you can’t, use a mixture of 3 parts STP Oil Additive to 1 part CV Joint Grease. The consistency should be like a thick molasses, not runny. If you find the Power Punch it comes in a handy squirt bottle. If you end up having to mix your own, get a small squirt bottle (Like a mustard bottle) or a small funnel, and fill it before you put the box in."
Gordo