I'm getting close to the time when I hit 5,000 miles. I do not have prepaid maintenance.

It appears to me that Toyota changes the oil filter and oil and rotates the tires and checks fluids which I can check myself and then charges about $60. Am I missing something?

Is there any good reason why I shouldn't get my oil and filter changed elsewhere for $30. I have used a garage before that will let me bring my own filter and oil and charges me $20 for labor.

Are the checks Toyota makes critical to the warantee?