hi coffeehound
i used a 20+ year old red container of gaf universal ( maybe it was before it was called vivadol universal ? )
it was the best developer i have ever used, hands down ( even poorly stored and 20+ years old )
it was in a studio i was renting, and on a window sill cold in the winter, and really hot in the summer.
i don't know if this is the same stuff, the dilutions for the other universal were 1:1/1:2 paper, 1:5 film 68º / 6mins
and that isn't what vivadol universal suggests.
if you can contact the seller, ask if it is all loose inside or if he can hear clumpy developer,
if it is clumpy stay away , but if it is all loose, you might buy a can and see if it is any good
just don't use good film for your tests
-john