Wow! SO Many threads on this one
Someone has that answer on here, and I do believe the owners manual also indicates how they calculate it. Basically, it's up to you: follow the DIC - which can go past 8000 miles!! - or, do what you're comfortable with. Me? I did mine at 1500 and will be doing it again, very soon, at 5K
You WILL get LOTS of different answers here...
EDIT: From the owner's manual:
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system
that indicates when to change the
engine oil and filter. This is based
on engine revolutions and engine
temperature, and not on mileage.
Based on driving conditions, the
mileage at which an oil change is
indicated can vary considerably.
For the oil life system to work
properly, the system must be reset
every time the oil is changed.
When the system has calculated
that oil life has been diminished,
it indicates that an oil change is
necessary. A CHANGE ENGINE
OIL SOON message comes on.
See Engine Oil Messages on
page 4-32. Change the oil as soon
as possible within the next 1 000 km
(600 miles). It is possible that, if
driving under the best conditions,
the oil life system might not indicate
that an oil change is necessary for
over a year. However, the engine oil
and filter must be changed at least
once a year and at this time the
system must be reset. Your dealer/
retailer has trained service people
who will perform this work using
genuine parts and reset the system.
It is also important to check the oil
regularly and keep it at the proper
level.
If the system is ever reset
accidentally, the oil must be changed
at 5 000 km (3,000 miles) since the
last oil change. Remember to reset
the oil life system whenever the oil is
changed.