I agree 100%. Our cars are very picky about oil and filters. The K&N filter is garbage. Like me and soloz2 said about OEM and Wix filters these are the only ones you should use. Most filters lack the psi that our cars require. I had been using the dealers Castrol synthetic, but I didn't care for Castrol, so I switched to Amsoil 5W-30. If you ask around Amsoil is very popular and high quality.