I've been using the Mobil 1 M1-M110 oil filter and Mobil 1 5-20 oil in my 2006 Acura TL. After noticing the comments about Mobil changing their formula for Mobil 1 oil I'm wondering if they have "cheapened" their oil filters also. Are Napa Gold and Purolator One oil filters available for the TL? If yes does anyone have part numbers? Is there a preference or are either of these (NAPA Gold or Pure One) better than the standard Honda oil filter? Any good suggestions are welcomed. I'm not that knowledgeable on the topic and look to groups like this for good advice. Thanks. Steve