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Flow Rate and Oil Cooler????? #4527734
09/27/17 04:56 PM
09/27/17 04:56 PM
Joined: Mar 2015
Posts: 27
Indiana
redneck47441 Offline OP
redneck47441  Offline OP
Joined: Mar 2015
Posts: 27
Indiana
I read an interesting thought on another forum about filters that increase the flow rate possibly effecting oil temp. The thought was the oil flowing faster through a better filter causing oil temp to increase on vehicles with an oil cooler due to not enough dwell time in the oil cooler? Any thoughts on this would be appreciated, it kind of makes sense to me.

Re: Flow Rate and Oil Cooler????? [Re: redneck47441] #4527784
09/27/17 06:00 PM
09/27/17 06:00 PM
Joined: Aug 2010
Posts: 12,903
Northern Kentucky
901Memphis Offline
901Memphis  Offline
Joined: Aug 2010
Posts: 12,903
Northern Kentucky
No, the oil filter is but a tiny restriction on the entire oil system.


2012 Chevy Cruze LT 1.4T - 50k
2002 Buick Century 130k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980
Re: Flow Rate and Oil Cooler????? [Re: redneck47441] #4527789
09/27/17 06:03 PM
09/27/17 06:03 PM
Joined: Jun 2012
Posts: 678
Reno, NV
redbone3 Offline
redbone3  Offline
Joined: Jun 2012
Posts: 678
Reno, NV
I don't think it makes a lot of difference. If the flow rate increases it will result in a larger quantity of oil being cooled less per volume unit. If the flow rate decreases it will result in a smaller quantity of oil being cooled more per volume unit. When the cooled oil is mixed with that remaining in the crankcase it should be close to a wash.


2014 Passat Wolfsburg, 1995 Miata.
Re: Flow Rate and Oil Cooler????? [Re: redneck47441] #4527822
09/27/17 06:45 PM
09/27/17 06:45 PM
Joined: Oct 2014
Posts: 11,857
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,857
Idaho
The filter bypasses, how would the flow rate increase?


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Flow Rate and Oil Cooler????? [Re: redneck47441] #4527991
09/27/17 10:18 PM
09/27/17 10:18 PM
Joined: Jul 2010
Posts: 18,741
PNW
ZeeOSix Offline
ZeeOSix  Offline
Joined: Jul 2010
Posts: 18,741
PNW
As long as the oil pump is not in pressure relief, which is 99+% of the time, all the oil volume coming out the pump goes through the filter and the engine. So the filter therefore has no effect on flow to the engine in this case of pump not in relief.

The guys on the other forum sound like they don't understand positive displacement oil pumps and how oiling systems work.

Re: Flow Rate and Oil Cooler????? [Re: redneck47441] #4528122
09/28/17 05:53 AM
09/28/17 05:53 AM
Joined: May 2007
Posts: 7,509
Indianapolis, IN
dnewton3 Offline
dnewton3  Offline
Joined: May 2007
Posts: 7,509
Indianapolis, IN
Oil filters will, generally, flow far more than the engine pump will deliver. There is a flow relationship between rpm and pressure for a positive displacement pump system such as nearly all vehicles have. That is augmented by the pump relief at times, as Zee mentioned.

Anyone who believes that a traditional FF oil filter is the metering device for lube flow is NOT a credible source.


The act of preventative maintenance, in and of itself, is FAR MORE important than brand/grade/base choices among lubes and filters.
- under maintaining something is akin to abuse/neglect; that can kill equipment by shortening the lifespan
- over maintaining something has never been proven to be anything but a waste of time and money

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