Should be 36 ounces + 4 more ounces if it has an oil filter. Just do not overfill it.
Just add enough oil to reach the full mark on the dipstick.
what grade of oil on this engine
2 Cycle engine oil.
Click the link and then look up your engine based on the model number.
There is not enough info to ask that question. There are many different models of craftsman mower. Please ask again and include the model of the mower, the engine make and size.
The mower should hold about 1/2 a quart, 16 ounces of SAE-30 weight oil...this is based on draining the oil from the engine.
For a Briggs & Stratton Intek engine "PH8170"
48 oz.
If it is a 4 cycle engine, yes, it does need oil. If it is a 2 cycle the oil is mixed with the gasoline.
The engine has a drain plug located on the engine block. Look closely and you will find it.
It will be located somewhere on the lowest part of the engine block.
1 gal gas + 2cycle engine oil