This will be very interesting to the guys with C5 Vettes using the LS1 & LS6 engines, as well as anyone who believes that the PureONE is "restrictive to oil flow".
I own a 2002 Z06 Vette and often rev it to the limits. The LS1 & LS6 engines have the filter bypass valve built into the engine block near the filter mount. I believe the built in bypass valve is set for around 8~10 psi. Since the filter bypass valve is built into the engine, the filters for this car does not have a bypass valve. The PureONE for this engine is the PL14006.
I contacted the Purolator Engineering Dept to ask them if running the PureONE PL14006 at track events could possibly cause the filter bypass valve to open with hot oil at high RPMs when the flow rate is maximized. This is an experpt from my original email:
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"I'm running Mobil 1 5W-30 full synthetic oil, and the viscosity is specified by Mobil as 11.3 cSt @ 100º C. This would be the typical "nominal" hot viscosity. The oil pump in this Vette engine puts out ~10 GPM at 75 psi.
Can the PL14006 flow this maximum hot oil volume of 10 GPM at 11.3 cSt without creating more than 8 psi difference across the filter media? I'm worried that at high RPM the filter bypass (in the engine block) might operate and send unfiltered oil to the engine."
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The Engineer at Purolator actually tested the PL14006 on their flow bench and sent the "Flow vs. PSID" test data, along with some other inputs. This is their response:
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"The test stand was set at 203 degrees F. Note the higher temp will lower the viscosity of the oil even more. So at 212 degrees F the differential pressure of the filter will be even slightly lower. The test oil used is very close to the same viscosity of 11.3cST at the tested temp."
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He sent an Excel file with the test data (shown below), and a plot. Here is the data, so if you want to see the graph just plot it up in Excel.
Flow (GPM) --- Delta P
1 --- 0.4
2 --- 0.7
3 --- 1.1
4 --- 1.5
5 --- 1.9
6 --- 2.3
7 --- 2.7
8 --- 3.2
9 --- 3.6
10 --- 4.1
11 --- 4.7
12 --- 5.2
13 --- 5.8
14 --- 6.4
15 --- 7.0
16 --- 7.6
17 --- 8.3
18 --- 8.9
Here's the PL14006 ... it's not a huge filter (3" dia x 3.4" long).
http://www.purolatorautofilters.net/resources/Popup/Pages/PartDetailPopup.aspx?partnum=PL14006
This is very good information of flow vs PSID with hot oil, as this kind of data is hardly ever seen from the manufactures who have the required test equipment to measure this kind of data.
As you can see, the PureONE is NOT very restrictive to flow.
It's even less restrictive than I thought it would be ... and certainly much better than the internet rumors that make it sound as though they are "too restrictive" to flow.
I own a 2002 Z06 Vette and often rev it to the limits. The LS1 & LS6 engines have the filter bypass valve built into the engine block near the filter mount. I believe the built in bypass valve is set for around 8~10 psi. Since the filter bypass valve is built into the engine, the filters for this car does not have a bypass valve. The PureONE for this engine is the PL14006.
I contacted the Purolator Engineering Dept to ask them if running the PureONE PL14006 at track events could possibly cause the filter bypass valve to open with hot oil at high RPMs when the flow rate is maximized. This is an experpt from my original email:
--------------------------------
"I'm running Mobil 1 5W-30 full synthetic oil, and the viscosity is specified by Mobil as 11.3 cSt @ 100º C. This would be the typical "nominal" hot viscosity. The oil pump in this Vette engine puts out ~10 GPM at 75 psi.
Can the PL14006 flow this maximum hot oil volume of 10 GPM at 11.3 cSt without creating more than 8 psi difference across the filter media? I'm worried that at high RPM the filter bypass (in the engine block) might operate and send unfiltered oil to the engine."
--------------------------------
The Engineer at Purolator actually tested the PL14006 on their flow bench and sent the "Flow vs. PSID" test data, along with some other inputs. This is their response:
--------------------------------
"The test stand was set at 203 degrees F. Note the higher temp will lower the viscosity of the oil even more. So at 212 degrees F the differential pressure of the filter will be even slightly lower. The test oil used is very close to the same viscosity of 11.3cST at the tested temp."
--------------------------------
He sent an Excel file with the test data (shown below), and a plot. Here is the data, so if you want to see the graph just plot it up in Excel.
Flow (GPM) --- Delta P
1 --- 0.4
2 --- 0.7
3 --- 1.1
4 --- 1.5
5 --- 1.9
6 --- 2.3
7 --- 2.7
8 --- 3.2
9 --- 3.6
10 --- 4.1
11 --- 4.7
12 --- 5.2
13 --- 5.8
14 --- 6.4
15 --- 7.0
16 --- 7.6
17 --- 8.3
18 --- 8.9
Here's the PL14006 ... it's not a huge filter (3" dia x 3.4" long).
http://www.purolatorautofilters.net/resources/Popup/Pages/PartDetailPopup.aspx?partnum=PL14006
This is very good information of flow vs PSID with hot oil, as this kind of data is hardly ever seen from the manufactures who have the required test equipment to measure this kind of data.
As you can see, the PureONE is NOT very restrictive to flow.