How much oil to my 70cc.

I think my castrol 2 stroke scooter stuff is 2t might be wrong 7T? Lol god knows but it says it's scooter oil. Machanic said nothing when he looked at it. Mixer is good idea if your tanks big enough...look light a right plum tho.

Scuba ima try that tomorrow mate, didn't think of putting in oil first :/