I collect old chainsaws and outboards now. I was in the boating industry at an OMC shop in the 1960's. We batted this around with factory reps and the race boat guys. I ran a little J Class outboard in off-shore sometimes.
AND, I owned a DKW sedan
All used 32:1 unless they were plain bearing motors. Even today on Hot Saws I build, still 32:1. I use only JASO rated oils, mostly from Motul.
Back in the day it was Full Bore brand oil only (which came out in Dirt Bike magazine tests as having lowest cyl head temp and clean chambers).
I also helped on 2-stroke race bike efforts for some buds. Mostly Yamaha IT enduro bikes. But I was partial to Spanish bikes (Bultaco & Ossa) and tuned a lot of those for trail riding at altitude (9000 ft + ).
My race bike was a Hodaka 125 ...
So I've seen the inside of more 2-stokes than I care to count.
You don't need to take my word for it, but oil is cheap. Engines are not. That DKW will oil starve on long down hills with the throttle closed - so don't. Your only fix is to run the oil fat and it will carry you through slowing with the throttle off and down hills. If the down hill is more than a 1/4 mile, put in neutral and rev the engine a few times while using the brakes to control speed, then let it idle while costing along in neutral. Managing a 2-stroke is different than a "normal" car.
Modern 2-strokes with direct injection at the bearings are a world away from from 1960's technology. Back then the Saab's and DKW's (and Auto-Unions) were mostly round town cars for most folks. Or farm to market cars. They seldom saw more than 45 MPH, and a trip of 30 miles was a fair distance. Sure, they will go to Colorado, but only if cared for. Buy good oil and mix it at least 32:1 and kill some mosquitoes
Plus you get to sneer at the EPA and planet warmers as you whizz by
Full Bore is long gone, and so are many other good 2-stroke oils. Do your research: https://www.oilspecifications.org/iso_2t.php
There are good USA made oils, but mostly it's a Euro and Japan thing. Buy in bulk and remember you are dealing with not only oil, but gasoline with ethanol. See what the refiners and blenders you are considering say about their oil for use with ethanol gas ...