Digital BW, The Print

5 years ago I used to work in a computer shop as a repair tech, and 
we used to get lots of squeaky HP's coming through the door. We had 
some special kind of grease (of course whose name escapes me know 
when I need it!), and we'd just lube the bar ever so lightly, run 
some test prints and usually the squeak went away.

Well, my 1160 started making an awful squeak/screech today, and it 
seems to be the same problem as those HP's I use to work on.

Anybody have an recommendations for a grease or metal lube to use on 
the bar, that won't damage anything in the printer?

Thanks for the guidance!
-Jason