How much oil do you add to gas in 4 stroke engine?

A four-stroke engine typically uses a mixture of gasoline and oil for fuel. The gasoline provides the primary source of energy, while the oil lubricates the engine's moving parts and helps to cool them down. The ratio of oil to gasoline in a four-stroke engine depends on the specific engine model and its manufacturer's recommendations. Generally, the ratio of oil to gasoline in a four-stroke engine is between 1:25 and 1:50. This means that for every 25 to 50 parts of gasoline, you would add one part of oil.

It is important to use the correct ratio of oil to gasoline in a four-stroke engine, as too much oil can cause the engine to run rich and produce excessive smoke, while too little oil can lead to engine damage due to insufficient lubrication. If you are unsure about the correct ratio of oil to gasoline for your four-stroke engine, you should consult the owner's manual or contact the engine manufacturer.

Here are some general guidelines for adding oil to a four-stroke engine:

1. Check the engine's oil level before each use. The oil level should be between the "full" and "add" marks on the dipstick.

2. If the oil level is low, add enough oil to bring it up to the "full" mark.

3. Do not overfill the oil tank, as this can cause engine damage.

4. Use the type of oil that is recommended by the engine manufacturer.

5. Change the oil according to the manufacturer's recommendations.