Hello, this is my first post on here. We have a 2008 wrx. I have been changing my own oil and filter for awhile now. I have been putting on the Wix 51334 filter instead of that tiny 51365 I think it was. My question is, am I hurting anylthing? I do notice that the longer filter is closer to the exhaust heat shield. I am putting in 4 1/2 quarts of oil to bring the level up to the top of the dip stick. Thanks ahead forl your help.