How much oil should you put in your 4 stroke ATV?

The amount of oil you should put in your 4 stroke ATV depends on the size of the engine. Generally speaking, you should add enough oil to bring the level to the "full" mark on the oil dipstick.

Here are some general guidelines for oil capacities for different engine sizes:

- 50cc to 90cc: Typically requires around 0.8 to 1 quart (0.75 to 0.95 liters) of oil.

- 100cc to 150cc: Usually requires around 1.2 to 1.6 quarts (1.1 to 1.5 liters) of oil.

- 160cc to 250cc: Typically requires around 1.7 to 2.2 quarts (1.6 to 2.1 liters) of oil.

- 260cc to 350cc: Usually requires around 2.3 to 2.8 quarts (2.2 to 2.7 liters) of oil.

- 360cc and above: Generally requires around 3 to 3.5 quarts (2.8 to 3.3 liters) of oil.

However, it's best to refer to the owner's manual of your specific ATV model for the exact oil capacity and type of oil recommended by the manufacturer. The owner's manual will provide precise instructions based on the engine size and design of your ATV.