yep - and the oldschool carby RX7 I used to feed that still lives, at the time of my ownership I used to put PSO 2 stroke with super petrol (it was very good, no deposit, no smell/varnish etc) - and over time I beleive it helped to clean up the engine too - because it used to start more quickly after half a year's use.
Now the gearhead owning it puts Emarat 2 stroke which he got from me. And caltex delo 400 in the engine itself - as it does a wonderful job of cleaning up the engine insides