I 'm afraid if I change the engine oil by myself this will damage the warranty.
I know how to do it but is there any problem for that?
somebody know?
Thank you.

No changing your own oil will not void the warranty.

No it will be fine. You might want to keep record of doing it (receipts for oil, etc. and mark the dates/mileage), but it would be doubtful that you'd ever be asked to furnish that information for warranty service.

Thank you for the answers on the warranty.
have a great day.