2-cycle engine oil. This is different from the oil you would put in a car. Look for it in the lawn care section of your department or hardware store.
What kind of oil do I use
SAE 30 in the summer and SAE 10w30 in the winter. I highly recommend you use 100% synthetic oil in this air cooled engine.
50:1
My 5hp MTD recommends 5-30 oil.
50to1
The 1998 model, 5 hp Mariner outboard requires a 50:1 ratio, three ounces of 2 cycle oil, to one gallon of fuel.
Rimula will raise oil pressure and lower hp by 5%
5-20 oil
50-1
SAE 30 weight 100% synthetic oil.
A Briggs & Stratton 5 HP flathead engine typically holds about 20 ounces (or approximately 0.6 liters) of oil. It's important to check the owner's manual for the specific model, as oil capacity can vary slightly. Always ensure the engine is on a level surface when checking or adding oil for accurate measurements.
oil ratio is 1% Pierre