Oil Filter Comparison - Page 2

ss3011 · 01-03-2019, 01:04 AM

Here is a cut open WIX "R" filter . The bobbin has metal end caps and the media is bedded in the caps with some sort of glue . There is no anti-drainback valve . The spring holds the entire filter assembly up against the end plate and provides a way to bypass oil if the media plugs .

Eman · 01-03-2019, 03:25 PM

OK, we've finally gotten to the spring! WIX and other filter manufacturers state no bypass. The oil flows in the small holes pressurizing the housing and then the oil flows through the media and up the tube to the motor. If the filter clogs I don't see how the spring would push back if the oil is pressurized from outside in.

01-03-2019, 01:04 AM	#1
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 909 Likes: 70 Liked 239 Times in 114 Posts	Re: Oil Filter Comparison Here is a cut open WIX "R" filter . The bobbin has metal end caps and the media is bedded in the caps with some sort of glue . There is no anti-drainback valve . The spring holds the entire filter assembly up against the end plate and provides a way to bypass oil if the media plugs . Attached Thumbnails

01-03-2019, 03:25 PM	#2
Eman Member Join Date: May 2014 Location: E TN Posts: 473 Likes: 16 Liked 133 Times in 76 Posts	Re: Oil Filter Comparison OK, we've finally gotten to the spring! WIX and other filter manufacturers state no bypass. The oil flows in the small holes pressurizing the housing and then the oil flows through the media and up the tube to the motor. If the filter clogs I don't see how the spring would push back if the oil is pressurized from outside in.