Thanks everyone for your replies. I mainly wanted to educate myself to see if there is any differance and what it is. If I'm not 100% sure I'll just take it back. Just that it was a synthetic oil and very cheap. I might just keep it for my lawn mower and whipper snipper.
Anyway here is what Valvoline said.
Hi Gilbert,
Was your bicycle store purchased, or home built?
If store purchased, it should have a handbook, describing the oil to use.
If home built, I would presume that you have used a garden type motor, ie whipper snipper etc.
The outboard two stroke can be used in garden design motors, as long as using std unleaded fuel, and maintaining a 25:1 ratio.
regards,
Michael