Does the scooter's accelerator leak oil?

If there is oil in the exhaust pipe, it is unlikely to be clean. It should be turbid or black. You can check whether the engine is short of oil first, as long as it is not short of oil, it will be fine. If the engine oil is insufficient, it may be that the engine oil is burning. Need to check the cylinder block, piston, piston ring and valve oil seal to see if it is water.