It actually doesn't. Put it hand tight. and go 1/2 to 1 turn with socket and it is fine.The filters are supposed to be turned on two full turns after the rubber 0-ring makes contact with the case. That's DAMN tight. I used a pair of filter plyers to take mine off last night when I changed my oil. I got it off but needed two hands on the plyers to grip the filter enough to get it off. I really don't understand why they say it has to be on that tight.