What is the oil capacity of a Yamaha ttr 230?

The oil capacity of a Yamaha TTR 230 is approximately 1.1 quarts (1.0 liters) when including the oil filter change. If you're just changing the oil without replacing the filter, the capacity is slightly less, around 1.0 quart (0.95 liters). Always refer to the owner's manual for specific maintenance guidelines and recommendations.