Originally Posted by krazymatt
That's a good point since after all the engineers at Chrysler should know what they're doing. I've heard that it's not good to drain out the factory fill oil too soon.
I don't think factory fill is special for jeep, unlike the Honda fill. Honda uses some high-moly factory fill or something like that. I forget...
Mileage-based change intervals are a thing of the past. Some folks, based on how they use the vehicles, really do need a 3k miles oil change, others can go 10k or more without depleting the oil additive package.
With a respected brand-name oil of the recommended grade(s) and a good filter there's really few reasons not to follow the OLMs these days.
Well, two reasons... Not exceeding warranty limits and extremely dusty environments.