I'm not sure about mixing the oil.

Tina, the bottom end of a 2 stroke is lubes with the oil that's mixed with the petrol, only the gearbox has oil in it.

To be honest, he'd be better running it on modern synthetic 2T oil - nothing smells better than Motul - even Castrol!

Don't put a dash of R40 in the fuel either, it's castor based and won't mix well with the 2T oil. At best it will foul up the plugs and at worst the reeds will get gummed up and it'll blow back up through the carb, and a seize will follow.