Oil Sump Circulation Throughout Engine
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Originally Posted By: Shannow
That's my guess too...more thrust, more load, lower MOFT, higher shear rate.
Pistons/rings/cylinders seem to need that higher HTHS oil more than most engine parts - especially at high RPM and load. And this explains why rings usually wear out before journal bearings or other parts. And why race engines wear much faster than grocery getters. Cool graph.
That's my guess too...more thrust, more load, lower MOFT, higher shear rate.
Pistons/rings/cylinders seem to need that higher HTHS oil more than most engine parts - especially at high RPM and load. And this explains why rings usually wear out before journal bearings or other parts. And why race engines wear much faster than grocery getters. Cool graph.
Originally Posted By: Duffyjr
I guess I always just figured it was circulating pretty fast. The reason I assumed this was the flow rate the filters I use have.
Napa Gold 1040 and 1036 both say they have 7-9 gpm flow rate according the Napa site. But from what you guys are saying they aren't being pushed to their limits very often if ever they way I drive.
Another thing I found interesting is I've seen a few posts where they mention running a Wix/Gold in the summer and an XP in the winter for extra flow on start up.
Just a change in media will not buy much. But an oversized filter with more media area will definitely flow more cold thick oil w/o opening the by-pass
I guess I always just figured it was circulating pretty fast. The reason I assumed this was the flow rate the filters I use have.
Napa Gold 1040 and 1036 both say they have 7-9 gpm flow rate according the Napa site. But from what you guys are saying they aren't being pushed to their limits very often if ever they way I drive.
Another thing I found interesting is I've seen a few posts where they mention running a Wix/Gold in the summer and an XP in the winter for extra flow on start up.
Just a change in media will not buy much. But an oversized filter with more media area will definitely flow more cold thick oil w/o opening the by-pass
Originally Posted By: Duffyjr
I guess I always just figured it was circulating pretty fast. The reason I assumed this was the flow rate the filters I use have.
Napa Gold 1040 and 1036 both say they have 7-9 gpm flow rate according the Napa site. But from what you guys are saying they aren't being pushed to their limits very often if ever they way I drive.
That "7-9 GPM" rating is the max the filter will flow without opening the bypass valve. Not sure what oil viscosity the rating is at, as the spec is very nebulous.
Originally Posted By: Duffyjr
Another thing I found interesting is I've seen a few posts where they mention running a Wix/Gold in the summer and an XP in the winter for extra flow on start up.
Why? ... both of those filters will flow well, and the flow delta-p difference between them would be just a few PSI which an engine won't even notice. Flow at start-up is low, so the key to ensuring no filter bypassing is going on in the winter time is to go easy on the gas until the oil warms up some. Go read this thread - LINK
I guess I always just figured it was circulating pretty fast. The reason I assumed this was the flow rate the filters I use have.
Napa Gold 1040 and 1036 both say they have 7-9 gpm flow rate according the Napa site. But from what you guys are saying they aren't being pushed to their limits very often if ever they way I drive.
That "7-9 GPM" rating is the max the filter will flow without opening the bypass valve. Not sure what oil viscosity the rating is at, as the spec is very nebulous.
Originally Posted By: Duffyjr
Another thing I found interesting is I've seen a few posts where they mention running a Wix/Gold in the summer and an XP in the winter for extra flow on start up.
Why? ... both of those filters will flow well, and the flow delta-p difference between them would be just a few PSI which an engine won't even notice. Flow at start-up is low, so the key to ensuring no filter bypassing is going on in the winter time is to go easy on the gas until the oil warms up some. Go read this thread - LINK
^ 2.23 mph, to be more exact. Some people do have trouble with arithmetic.
Originally Posted By: ZeeOSix
Originally Posted By: Duffyjr
I guess I always just figured it was circulating pretty fast. The reason I assumed this was the flow rate the filters I use have.
Napa Gold 1040 and 1036 both say they have 7-9 gpm flow rate according the Napa site. But from what you guys are saying they aren't being pushed to their limits very often if ever they way I drive.
That "7-9 GPM" rating is the max the filter will flow without opening the bypass valve. Not sure what oil viscosity the rating is at, as the spec is very nebulous.
Originally Posted By: Duffyjr
Another thing I found interesting is I've seen a few posts where they mention running a Wix/Gold in the summer and an XP in the winter for extra flow on start up.
Why? ... both of those filters will flow well, and the flow delta-p difference between them would be just a few PSI which an engine won't even notice. Flow at start-up is low, so the key to ensuring no filter bypassing is going on in the winter time is to go easy on the gas until the oil warms up some. Go read this thread - LINK
I thought it was interesting because when I first seen it posted I went to Napa's site and seen all the Wix made filters for my applications had the same flow rate but used different media so I figured it was more splitting hairs than anything else.
And thanks for the link, while I'm not going to pretend I understood the details of Jim's testing I did get the gist of the post.
Originally Posted By: Duffyjr
I guess I always just figured it was circulating pretty fast. The reason I assumed this was the flow rate the filters I use have.
Napa Gold 1040 and 1036 both say they have 7-9 gpm flow rate according the Napa site. But from what you guys are saying they aren't being pushed to their limits very often if ever they way I drive.
That "7-9 GPM" rating is the max the filter will flow without opening the bypass valve. Not sure what oil viscosity the rating is at, as the spec is very nebulous.
Originally Posted By: Duffyjr
Another thing I found interesting is I've seen a few posts where they mention running a Wix/Gold in the summer and an XP in the winter for extra flow on start up.
Why? ... both of those filters will flow well, and the flow delta-p difference between them would be just a few PSI which an engine won't even notice. Flow at start-up is low, so the key to ensuring no filter bypassing is going on in the winter time is to go easy on the gas until the oil warms up some. Go read this thread - LINK
I thought it was interesting because when I first seen it posted I went to Napa's site and seen all the Wix made filters for my applications had the same flow rate but used different media so I figured it was more splitting hairs than anything else.
And thanks for the link, while I'm not going to pretend I understood the details of Jim's testing I did get the gist of the post.
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