I know that most of us use the fleece-type filter element when we change oil in the Crossfire. But if I remember correctly, the last time I looked into this, the fleece-type filter element is typically only specified for the SRT-6 model on most website look-ups. The paper-type element is recommended for all Crossfires equipped with the NA engine. I'm one that uses the fleece-type filter element, but others here have used the paper-type and still get good results & performance.

Choice of filter element also depends somewhat on driving habits/style and oil change interval service. If one is a oil changer that follows a strict interval of 6 months (or less), than the paper-element is probably fine. If you're one that adheres to the FSS monitored interval of 7000 miles (and I do), than one might need the fleece-type element. For me, a 7000 mile oil change is about every 2 years.

Stop & go traffic versus highway miles will also have a bearing on oil change interval. Typically, stop & go traffic will put more stress on the motor that constant highway speed. One might perform an oil change more often if your Crossfire is a daily driver with a lot of stop & go driving. This driving style could have a bearing on which filter type to use.

Does anyone know of a difference in filtration rating or efficiency between the paper & fleece filter elements? M-B really stipulates that the primary driver between paper & fleece is more related to the monitoring system & oil grade. Fleece for MMS used on MYs 2005+; paper for FSS MYs 1998-2004). And the monitoring system drove the oil change interval. Since 2005, M-B states that oil changes can be completed out to 30,000 km (18,600 miles) but a fleece-type filter element is required along with 229.5 synthetic grade oil (not sure I would go that long w/o an oil change). The Crossfire uses the FSS system, requires 229.3 grade oil, and M-B states that the paper element is adequate.

My $0.02. Probably more than $0.02.