URGENT: Non-jeep oil filter question
I've got a bit of a problem, and I thought I'd run it past the engine gurus here...
Wife drives a 2001 Impala LS with the Series II 3800 (3.8L v-6). We were changing the oil in it today, and I sent her to the parts room for a filter...she grabbed one and I didn't look at it very closely...screwed it on, filled 'er up with oil, and moved on...When I was cleaning up the shop afterwards, though, I realized that the filter she grabbed was not the Impala filter, but rather was a filter from my dad's pickup (95 Chevy K2500 with 350 (5.7L) v-8). I immediately compared a 3.8L filter with the 5.7L filter, and the designs are almost identical...same thread pitch, same opening size in the center, slightly different holes around the perimeter of the center hole, same diameter filter and same size o-ring (width and thickness) for sealing...the only difference is that the 5.7L filter is about one inch longer. It doesn't hit anything on the car, and even if the engine were really rocking, it wouldn't (lots of clearance). So I'm just wondering...is there any reason to pull it off and screw on a 3.8L filter? If I do that, do I need to drain all the oil, or can I just swap 'em out quick and top it off? (can't see any reason why I couldn't do that...) Advice? Suggestions?