Yes, "four cycle" and "four stroke" are the same. The two terms may be used to describe an engine. As a rule, the term "four stroke" is more commonly used.
Yes
2 stroke and 2 cycle mean the same thing
No. In this case, stroke and cycle means the same thing. So 2-stroke/2-cycle engines should have 2-stroke/2-cycle oil and 4-stroke/4-cycle engines should have 4-stroke/4-cycle oil.
Four-stroke and four-cycle motor oil refer to the same type of oil designed for four-stroke engines, which complete a power cycle in four strokes of the piston. The term "four-cycle" is often used interchangeably with "four-stroke," but "four-stroke" is the more commonly accepted terminology. Both types of oil provide lubrication, cooling, and cleaning for the engine components. It’s important to choose the right oil based on the manufacturer's specifications, as the viscosity and additives may vary.
There is no difference, they mean the same thing.
Yes they just have different makes and synthetic and standard.
Yes. A 2 cycle engine is also called a 2 stroke engine.
Yes
Yes it is.
any gas station. its called gasoline There is such a thing as a 2-stroke or a 4-stroke engine, but the fuel is the same (gasoline). The difference being that the 4-stroke engine uses regular gasoline straight from the pump while on the 2-stroke engine you have to mix 2-cycle oil with the gasoline.
Neither a four stroke nor a two stroke have a bigger piston. It all depends on the size of the engine and how it is built. A 250 four stroke will have the same sized piston that a 250 two stroke would if the bore size is the same. Cc is calculated by bore x stroke (how far up and down the piston moves) so if a 250 four stroke has a stroke of 3.00 inches and a 250 2 stroke has a stroke of 3.00 the piston will be the same size. The only difference between a 2 stroke and four stroke is how the engine works. A 2 stroke has reed valves and it makes power every time the piston goes up but a four stroke it makes power every 4 times the piston goes up.
a yz250 is two stroke and a yz250f is four stroke. same with the 125 and 85