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Originally Posted by astroracer
An oil filter works by "filtering" the oil through the filter. Oil enters the filter under pressure through the holes on the perimeter. It is forced through the element and exits through the big hole in the middle. Here is a pic that show the route....
Mark
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Theoretically.. however most cheap filters trigger the bypass before the pressure is enough to force it through the paper.
Also, at WOT and high RPM's (when your oil pressure is high) the bypass is full open and the oil travels the path of least resistance which is NOT through the high resistance paper.
So, when you are racing your oil is nearly unfiltered..
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"A ship in port is safe, but that's not what ships are built for."
See Bad Penny run the cones:
https://www.youtube.com/watch?v=8GUPPIX-92U
1971 Chevelle Wagon - Roadster Shop Chassis ProCharged Shafiroff LS and lots of yada yada
1968 Camaro - Project Track Rat - 440 RHS LS