Originally Posted by ZeeOSix
My comment was about your statement of: "... what matters more? Higher filtration numbers? Or a properly functioning oil system?"
It sounded like you think that higher efficiency filters cause more restriction, and the they will cause the oiling system to not function correctly. They won/t unless they are so restrictive that they cause the PD oil pump to hit pressure relief ... which would take a lot of restriction in an oil filter.
Originally Posted by sdude2k2000
I fully understand how oil pumps work... I'm talking about the oil cap and filters not properly fitting beneath it - thus not properly actuating the bypass valve when needed. The HEUI system isn't that forgiving to poor oil pressure...
Pretty much every vehicle on the road has the oil pressure sensor located after the oil filter. Which means that as long as all the oil volume coming out of the PD pump (ie, the pump is not in pressure relief), then the oil pressure should be the same regardless if some of the oil is bypassing the oil filter. Now if the filter was clogged, and the bypass valve was suck and not opening like it should, then it's possible that could cause the PD pump outlet pressure to hit pressure relief which would cut oil volume and hence pressure at the oil pressure sensor. But as long as the flow is the same at the sensor then the oil pressure will be the same if the sensor is located after the filter.
K.
OEM Filter.
My comment was about your statement of: "... what matters more? Higher filtration numbers? Or a properly functioning oil system?"
It sounded like you think that higher efficiency filters cause more restriction, and the they will cause the oiling system to not function correctly. They won/t unless they are so restrictive that they cause the PD oil pump to hit pressure relief ... which would take a lot of restriction in an oil filter.
Originally Posted by sdude2k2000
I fully understand how oil pumps work... I'm talking about the oil cap and filters not properly fitting beneath it - thus not properly actuating the bypass valve when needed. The HEUI system isn't that forgiving to poor oil pressure...
Pretty much every vehicle on the road has the oil pressure sensor located after the oil filter. Which means that as long as all the oil volume coming out of the PD pump (ie, the pump is not in pressure relief), then the oil pressure should be the same regardless if some of the oil is bypassing the oil filter. Now if the filter was clogged, and the bypass valve was suck and not opening like it should, then it's possible that could cause the PD pump outlet pressure to hit pressure relief which would cut oil volume and hence pressure at the oil pressure sensor. But as long as the flow is the same at the sensor then the oil pressure will be the same if the sensor is located after the filter.
K.
OEM Filter.