Always do my own oil changes and have used mobil 1 for quite sometime. I've been using the Mobil 1 Extended Performance for the last couple years. I recently did an oil change with the PureOne filter and the oil pressure at idle fluctuated. After some research I replaced the filter with a Bosch premium filter and the oil pressure regulation has been corrected. Any thoughts on what the issue is with the PureOne filter? Also recommendations for future filters. I'm looking at Mobil 1's filter and Wix for future uses. Thanks in advance.