Originally Posted by Zomie
This topic may be beaten to death, if so I apologize. I just picked up a 2005 crossfire and I love it.
I know it takes mobile 1 0W-40 8.5 quarts. How long should it go on an oil change? It doesn't void the warrenty to change it yourself? Also are there any other synthetic oils you can use? LOL the autozones in the area only seem to have 5 quarts at a time. 
Thanks so much!
James
How long should it go on an oil change?
That it depends on your driving conditions and if you do severe driving... like stop go, short -7 mile trips, or drive in the real cold... I would change it every 3k miles... if you do standard driving with a dominant part of it being on the highway or open roads without to much standing in the sun, or the cold, I would change it every 5-6k miles...
I know some people might disagree with me, but for the peace of mind that is definitely the way to go...
Changing oil yourself does not void warranty...
The oil recommended is the 0w40, but you can probably use 5w40 as well if you don't live in the severe cold...