4 cycle oil

[rustycat]

I recently order some SAE 30 oil for my lawnmowers.It's B&S 4 cycle for small engines.I thought lawn mowers were 2 cycle.Is this okay to use?

Do not put two stroke oil in a four stroke crankcase.

 

[Gord Baker]

2 cycle engine, you mix the gas with the oil, and 2 cycles generally don't have a seperate oil resevoir
4 cycle engine, straight gas and Oil goes in the crankcase.
2 cycle push mowers are rarely made anymore, if any.
What engine do you have?

2 Cycle engines require a specified mix of 2 Cycle Oil and Fuel. Not SAE 30 oil.
4 Cycle engine, ONLY Oil goes in the Crankcase.

 

[ILENGINE]

2 Cycle engines require a specified mix of 2 Cycle Oil and Fuel. Not SAE 30 oil.
4 Cycle engine, ONLY Oil goes in the Crankcase.

Actually the original 16:1 engines used 8 ounces of SAE 30W non-detergent motor oil mixed with a gallon of gas. But that is historically older engines before the widespread use of modern 2 stroke oils were available.

 

[rustycat]

Most it was only green lawn boy mowers that were two stroke. Toro had some two strokes but we're lawn boy engines. Toro and lawn boy merged together years ago.

Do not put two stroke oil in a four stroke crankcase.