1. The most likely cause is a problem with the carburetor. The carburetor is responsible for mixing air and fuel in the correct ratio for combustion. If the carburetor is damaged or not functioning properly, it can cause too much fuel to be mixed with the air, which can lead to gas in the oil.
2. Another possible cause is a problem with the piston rings. The piston rings help to seal the combustion chamber and prevent gas from leaking into the oil. If the piston rings are worn or damaged, they can allow gas to leak into the oil.
3. A third possibility is a problem with the head gasket. The head gasket seals the cylinder head to the engine block. If the head gasket is damaged, it can allow gas to leak into the oil.
If you suspect that gas is mixing with oil in your Cub Cadet riding mower, you should take it to a qualified repair technician for diagnosis and repair.
