STP oil treatment. Any benefit ?

[JeffInChina]

I have a 125cc cheap chinese scooter. It’s about 3 1/2 old. One day I changed the oil and put in some 2 cycle oil by accident. The oil was in chinese and I did t realize it was 2 cycle. Now the engine burns some oil. I check it frequently but sometimes it has very little oil left. I don’t want to have it rebuilt cause I don’t think it’s needed. Still has plenty of power. Tops about 65mph. The guy who fixes my scooter when i can’t do it myself charges about $50 for parts and labor for a rebuild. ( I’m in China. It’s cheap. Parts are cheap. Quality is always questionable .). So I saw some STP oil treatment. Was wonder if it might actually reduce the oil burning. Any input?