It's been well documented in these hallowed columns that it's not just smart, but also a power boost to get as rich a petroil mix through your two-stroke as possible, so even though you can run modern synth oil at 50:1 or more, I still poke oil through my old girl at 25:1. I use Motorex synth though.
In saying that, the tank stickers on those old Huskies say vege oil, so you'll find plenty of hard-core vets still using Castrol R and the like : I say, good on 'em, 'cos we get to share THE SMELL....
and the engines still come apart looking nice and sticky inside.
Tip the can, son...