No decrease in oil pressure seen with Purolator Pure One

[Michael SR]

quote:

---

Originally posted by Chevy Guy:
Pressure is determined soley on the clearances of the oil passages in the engine combined with the bypass valve setting. Flow is realtively low in an engine, its not like water flowing out of a hose.

---

don't forget, though, the flow demands of an engine increase with rpm from centrifugal effect at the rod journals. so if the pump maintains the same pressure through the whole rev range, it is flowing more through the engine at high rpm than at low rpm.

i know that's what you said, that pressure and flow weren't necessarily related, i just wanted to clarify another phenomenon to add to the complication of the function.

-michael

 

[Steve S]

Why would there be a drop in pressure from the oil filter?

 

[427Z06]

quote:

---

Originally posted by Michael SR:

quote:

---

Originally posted by Chevy Guy:
Pressure is determined soley on the clearances of the oil passages in the engine combined with the bypass valve setting. Flow is realtively low in an engine, its not like water flowing out of a hose.

---

don't forget, though, the flow demands of an engine increase with rpm from centrifugal effect at the rod journals. so if the pump maintains the same pressure through the whole rev range, it is flowing more through the engine at high rpm than at low rpm.

i know that's what you said, that pressure and flow weren't necessarily related, i just wanted to clarify another phenomenon to add to the complication of the function.

-michael

---

I agree with what you both have said. I think the real question here is what is the effective restriction through the engine compared to that of through the oil filter, granted that the restriction lessens in the engine at higher RPMs as michael has pointed out. If the restriction through the engine is effectively like 10-to-1 compared to the filter, then the restriction through the filter starts to become insignificant.