When should I change my car's oil?

The "maintenance required" light is tied to mileage on these - it will start coming on 5000 miles after it was last reset (which it should have been last time you had the oil changed), it doesn't know/care what the actual state of the oil is - just that 5000 miles have been driven since it was last reset.

The oil looks okay in your picture - and to be honest I'd expect a good quality synthetic oil to last more than 5k. However it's impossible to tell the complete nuances of how well an oil is going to be performing from a purely visual inspection. Add in that you're coming up on 10 months since it was changed I'd probably suggest changing it again.

If you decide against it you can reset the light by the following procedure:

• Turn the ignition switch to the “On” position, but do not start the engine
• Press the odometer button until you see "Trip A" on the LCD display
• Turn the ignition back to “Off”
• Press and hold the trip computer "Reset" button, and turn the ignition switch to the “On” position
• Continue to hold down the "Reset" button until “000000” MILES appears on the display and the maintenance light turns off.

It's alright to exceed what's prescribed from time to time. Your engine oil looks fine from the picture, and considering you filled up with full synthetic oil, it'll probably take some time before you need another oil change. It's best that you get it changed a little shy from the 10k mark. If you wanna learn more about oil you can check out the oil guide from Dig My Ride. Make sure to check your oil levels from time to time and watch out for that engine light.