Small 2-stroke engines don't have any separate lubrication system, so they rely on oil mixed with the fuel to be carried to all the parts of the engine that needs lubrication.
If it is a 2-stroke engine, 2-cycle engine oil is added to the gasoline. If the engine is 4-stroke, regular 30W motor oil is used. To tell if your engine is 2-stroke or 4-stroke, look for a spout where oil is poured into the engine. If there is no spout, then the engine is 2-stroke and 2-cycle oil must be added to the gasoline.
yes for a 2 stroke engine.
Because 2t burns cleaner than 4t.
The best way to know if an engine is 2-stroke or 4-stroke, is to look for an oil spout. If the engine has an oil spout where oil has to be poured into, it is a 4-stroke. If the engine has no oil spout and the oil has to be added to the fuel, then it is a 2-stroke.
There is no difference between 2 stroke oil and 2 cycle oil. They are the identical product but are called different names. The 2 stroke refers to the engine type that the oil can be used in.
It is possible to use 4-stroke oil in a 2-stroke engine in an emergency situation. You should not use this oil in the long term as it will damage the engine.
A 2-stroke engine requires adding 2-cycle oil with the gasoline.
It depends if it is a 2 stroke or a 4 stroke. A 2 stroke engine, you mix the gas and oil. A 4 stroke engine, there are separate tanks for the oil and gas.
No you can not.
If the Ryobi is a 2 stroke engine you must use 2 stroke oil and never use 4 stroke. But you ask about 20w50 oil which is confusing. 2 cycle engine do not use multi-vicosity oil. Any 2 cycle oil can be used in your Ryobi if it is mixed at the correct ratio.
Oil is a lubricant. 2 stroke oil is designed to be mixed with gasoline and in that form it lubricates the engine. 4 stroke oil lubricates the engine but is not burned as 2 stroke oil is. This has nothing to do with speed. So, the answer to your question is neither is faster as they are just lubricants.
Drain it out and replace with proper oil