I had my CX-9 into the Mazda service center for some maintenance, and one of the service techs asked my if the oil filter that's on the vehicle now (a Wix 57002 which I installed myself) has a check valve in it. He said the OEM filter has one, which he said is required by Mazda. He said if it doesn't have one it could damage the turbo. Is there any way to check if this particular filter has one, and if not, which ones do? Thanks.