Can using two stroke oil in a four stroke engine affect it?

Update: i mean if i mix it in the gas...i know i need to use 4 stroke or just 10-40 or 20-50 or whatever i choose for the crankcase...i'm not that stupid. i was told my bike was a two stroke, so i have been using it, but i just found out it's actualy a four stroke...just wondering if i should disassemble the engine... show more i mean if i mix it in the gas...i know i need to use 4 stroke or just 10-40 or 20-50 or whatever i choose for the crankcase...i'm not that stupid. i was told my bike was a two stroke, so i have been using it, but i just found out it's actualy a four stroke...just wondering if i should disassemble the engine and head and clean it out..
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