The Yamaha Ray ZR Street Rally is a scooter model that comes with a 113cc engine. The recommended engine oil capacity for this scooter is approximately 0.8 liters (800 ml). However, it's important to note that this is an approximate value, and it's always best to consult the owner's manual or contact a Yamaha dealership for the most accurate and up-to-date information regarding the specific engine oil capacity for your Yamaha Ray ZR Street Rally.