Originally Posted by PoManzAWD
In regards to the small 'removable' plastic panel that covers 3/4 of the oil filter; The plastic clips at each side will fragment into 100 pieces if you try to remove them in winter temps. The fasteners in the center are no problem. It's still annoying enough that I left that panel permanently off after the 2nd oil change. There's no need for it, other than to frustrate owners into going in for oil changes.
I'm assuming that that plastic panel helps to reduce drag, and thus, increase your MPG.