generally a lot of OLD machines had a "fill level" plug - you filled
'till oil came out the hole then pit the plug in, but I THINK the
gearbox was initially packed with NLGI-2 grease - with age it breaks
down to oil and "soap" - and the oil can leak out where the crease
would not. #2 grease is almost the consistancy of peanut butter - and
like (non homogenized)peanut butter the oil separates out
Assuming it WAS grease, Lucas Red 'n Tacky EP2 would likely be as good
as any but the box needs to come apart and be cleaned of all the
"soap" left in the box - you may need to almost chip it out.You will
likely need to find or make a new gasket too.