00 grade Snapper grease for me too. Snapper says to use 00 grade grease. You can get it at tractor supply for $5 a quart.

I guess it's the same as car oil. Car manufacturer says to use say 5w-30. Car owner uses say 20w-50 in the summer. Will it work, yes. Is it the proper fluid, no.

Most any oil or grease will harden up after a few years exposed to the air. WD-40 turns into a sticky mess after 6 months.

Snapper uses 00 because they wanted a lighter fluid to move and lubricate but semi-thick to not seep out as fast.