I have a cr80 and i run 32:1 through it and it runs like a champ.
600cc
8 oz.
440 cc
RECENTLY CHANGED MY 1981 750 VIRAGO. TOOK 3 QUARTS OF SYNTHETIC MOTORCYCLE OIL
32:1
600ml any 80cc takes
a CR80 is a two stroke so you normally don't put oil in the crarckcase. However honda, yamaha, bel-rey, and a bunch of other companies make special transmission oils for them
The crank case say 2.4 liters.
1 quart of JASO MA, MA2 or SF/SG rated motorcycle oil.
About 0.63 quarts or 600 ml of gear oil. I would use SAE 80 W gear oil.
The Honda CR80 goes about 60 to 65.