Can someone correct this email?

Can someone correct this email for me please? I've to send it before midnight..

Dear Mr Anderson

Thank you for your email describing the problem you had with your Benson 500 motorcycle.

Although we cannot cover this with the warranty since you used a wrong oil. On page 6 of the operation instructions is described that you have to use the engine oil instead of the motor oil.

It’s certainly possible to repair your motorcycle. If you use our repair service in 90 days, you can still enjoy the warranty on it. Otherwise you should pay the normal working hours for the reparation.

For exact information, please feel free to call the maintenance department on the number 425-564-7889.

Sincerely
Sarah Hanston

P.S. You can find the manual in the annex.