hai bezet. i really like to give my opinion but u did not state whether its for 2 stroke motorcycle engine or 4 stroke one.
1. 2 stroke engines have different mechanicals and the lubricant used must be easily burnt as they mixed with air-fuel mixture for combustion. normal engine oil is not as easy to burn as specially formulated 2T oil. they must also able to give good lubrication as these engines (like in my Kawasaki KR150Z) tend to reach high speed easily. my bike is capable of doing 11,000rpm at 205km/h even though red line is 10,500rpm.
2 stroke engines has dry oil sump so, its gearbox need separate lubrication and this is done by using 4T oil.
so, answer to your question is NO.
2. on the other hand, normal 4 strokes moped (or kapcai) it very similar to normal motorcar engines with needs to lubricate valve train and camshaft. the engine need to be as compact together with its gearbox, and as 4 stroke engines have wet oil sump, they have the transmission and the primary drive attached together. unlike in cars, where engine and gearbox use different grades of oil, 4 strokes motorcycle use the same oil to lubricate both. thus the 4T oil is also specially formulated for that need.
again, the answer is NO. but it would be of no harm in case u want to use such oil for motorcycles. but i strongly do not recomend such practise.
well, if u insist to do so...gud luck to u! :)