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Old 03-29-2017, 11:57 AM   #1
joesstripclub
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Default Oil Filter Change Interval

I've seen the 2015+ Oil Analysis thread so I'm not going to start a discussion on oil, but I'm curious how often people are changing their oil filters. With people running such short OCI's, is anyone running a filter through multiple oil changes? Especially with some of the extended performance filters like the Mobil 1, which says its good for 20k miles I believe.
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Old 03-29-2017, 12:08 PM   #2
SJSC1608NJ
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I change my (subaru) oil filter when i change my oil. every 4k.
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Old 03-29-2017, 12:13 PM   #3
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Change the filter with the oil......
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Old 03-29-2017, 02:48 PM   #4
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i'll beat the dead horse why not...

filters are cheap, change them with every oil change.
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Old 03-29-2017, 03:02 PM   #5
joesstripclub
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Of course the obvious answer is change the filter every oil change, and I'm not saying that's the wrong answer. But modern synthetic oil is made to last for 15000 miles or more in many applications and so are some oil filters, since nobody is going to change their oil filter 3 times during a 15000 mile OCI. I know the new wrx's are hard on oil so only a crazy person would run a 15000 mile OCI, but I figured a few people out there would run two intervals on a filter. Maybe I'm wrong, but it seems like the short OCI's are mainly for the oil shearing down and fuel dilution, not necessarily dirty oil.

Just a random thought I had this morning. I didn't see much discussion of filters for 2015+ but maybe everyone just follows the change oil and filter at the same time routine.
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Old 03-29-2017, 05:49 PM   #6
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im sure there are people going two, if not three or more intervals before changing the filter...

there are also people who cover themselves in firecrackers and set them off
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Old 03-30-2017, 08:30 AM   #7
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Changed my oil last weekend and was shocked to discover all the major makers now make year long or long interval filters. My biggest gripe is that I DO NOT want to remove a filter that has been baking on an engine after a year. OCD oil dorks (of which I am not), will also lament that leaving a filter on during a change means you have a good cup or two of "old" oil still in the system with your oil change. I don't see any upsides to a year long filter unless you have one of those weird cars (not Subarus) which are designed to have the long 10,000 mile oil changes.
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Old 03-30-2017, 09:55 AM   #8
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To be totally honest. If the price of a replacement oil filter for each oil change is to much then you simple bought the wrong car. Plus the oil filter is literally the easiest change ever on the 2015+ change. About the difficulty equivalent of changing a light bulb. Just run oem filters. Can get them cheap off Amazon
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Old 03-30-2017, 10:34 AM   #9
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Quote:
Originally Posted by joesstripclub View Post
I've seen the 2015+ Oil Analysis thread so I'm not going to start a discussion on oil, but I'm curious how often people are changing their oil filters. With people running such short OCI's, is anyone running a filter through multiple oil changes? Especially with some of the extended performance filters like the Mobil 1, which says its good for 20k miles I believe.


Do it. Post your analysis. Same oil, same OCI. I'm interested in seeing the comparison. Filters are too cheap and easy to change for me personally. But I'd like to see some data.
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Old 03-30-2017, 11:10 AM   #10
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While the oil may have the same properties after an extended period, the engine is still making the same amount of stuff that needs to be filtered out. If it gets clogged up, a valve opens and the crud just goes through the engine.
An engine rebuild is a lot more than a lifetime of oil filters.

Just my thought.

[70's commercial, "You can pay me now, or you can pay me later!".]

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Old 03-30-2017, 11:19 AM   #11
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Quote:
Originally Posted by joesstripclub View Post
Of course the obvious answer is change the filter every oil change, and I'm not saying that's the wrong answer. But modern synthetic oil is made to last for 15000 miles or more in many applications and so are some oil filters, since nobody is going to change their oil filter 3 times during a 15000 mile OCI. .
Of course there are people who will cheap out on everything they can so if they are told that they have a 15,000 mile oil, and a 15,000 mile filter, there are those who will follow that.

Do so at your own peril.
A more stable oil will/should give you better protection for a longer period, like a 5000 OCI vs a 3000 OCI, but to not change the filter along w/the oil change is looking for trouble.

But, hey, it's your engine
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Old 03-30-2017, 11:20 AM   #12
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Quote:
Originally Posted by Titter View Post
im sure there are people going two, if not three or more intervals before changing the filter...

there are also people who cover themselves in firecrackers and set them off Fat guys lights firecracker vest - YouTube
TOOO DAMN FUNNY

What an idiot but you just can't teach stupid
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Old 03-30-2017, 01:13 PM   #13
bluesubie
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Default Oil Filter Change Interval

Quote:
6,065 miles on the oil, ~10,000 on the oil filter (Ams EaO), ~94,000 on the truck.
https://forums.nasioc.com/forums/sho....php?t=1605988

Note: This was NOT a random uoa. The OP used Dyson Analysis which is basically the same as hiring a personal tribologist/lubricant engineer/lubricant advisor.

Last edited by bluesubie; 03-30-2017 at 05:32 PM.
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Old 03-30-2017, 01:19 PM   #14
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Quote:
Originally Posted by bluesubie View Post


Highly stressed was a good descriptor he used. Thanks for this Dennis.
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Old 03-30-2017, 03:23 PM   #15
joesstripclub
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Quote:
Originally Posted by bnelsonWRX View Post
To be totally honest. If the price of a replacement oil filter for each oil change is to much then you simple bought the wrong car. Plus the oil filter is literally the easiest change ever on the 2015+ change. About the difficulty equivalent of changing a light bulb. Just run oem filters. Can get them cheap off Amazon
I never said price was an issue. Its more about wasting capacity of the filter, kinda like changing synthetic oil (in any other car) at 3000 miles. And I agree, this car has to be the easiest car I've ever changed oil on, other than the drain plug being way too tight from the factory.
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Old 04-17-2017, 08:29 PM   #16
EngineHacker
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Filter change every 2000 miles and oil every 4000 miles.
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