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Old 03-23-2019, 10:31 AM   #1
Norm Peterson
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Default Oil filter questions, 2019 WRX, with the black filter

I'm about to change the oil filter on our (new) 2019 WRX. I'm not a newbie to vehicle maintenance/repair/modification, but I've never in 50+ years done a filter change where the filter was mounted up top with all the holes facing down.

I'm about to do a filter-only change once the car passes about 1000 miles (if Subaru is fine with running the original oil fill out to 6000 miles in normal service or 3000 miles severe, I'm certainly willing to let it run past 1000). The early filter change is just something I do, probably a hold-over from my own engine builds.

What I'd like to know in advance is how much oil is likely to escape when I loosen the filter, and is the little sheetmetal cup large enough to contain it (as long as I do my part about holding the drips over the cup).

Are there any other useful tips, such as first only loosening the filter without removing it or punching a hole in the filter can to allow it to at least partially drain before loosening it (a trick I've used on three previous cars, two of them not Subies)?


I've already searched at least four pages deep in both the 'Newbies and FAQs' section and this one, without finding what I'm looking for.


Thanks in advance.


Norm
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Old 03-23-2019, 10:58 AM   #2
TurboCarnage
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no oil leaks out when i remove the oem filter, which you have since its a brand new car.
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Old 03-23-2019, 11:07 AM   #3
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Thanks.

I assume that you're letting a warm engine sit for a few minutes first to let however much natural drainage that's going to happen, happen.


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Old 03-23-2019, 11:19 AM   #4
TurboCarnage
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yea i have a fujimoto (i think thats how you spell it) drain valve. i usually do it after work when the engine is up to temp. remove the filter, cap the flip the drain valve and let it do its thing till it stops dripping.
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Old 03-23-2019, 01:30 PM   #5
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Most Subaru filters hold about 1 pint.......let it sit, most oil will drain, minimal spillage when removing it.
Gasket up filters will hold more, newer gasket down will drain more.
Just be sorta quick, clean as needed......
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Old 03-23-2019, 01:36 PM   #6
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Just remove and replace. No rocket science on that one. Super easy. I've used K&N, Amsoil, and black Subaru filters. I usually change the whole enchilada (Oil, and filter) the filters probably last longer than the oil. Especially the supposed 20k Amsoil ones. Yet I change every 4 - 5k depending on how hard I run the car. I run 5w-40 mogul v300, with an oil cooler. Built block 400+ whp.

Just loosen oil cap to release pressure.. do not poke holes in the old filter, it should come off fairly easily. No need to over tighten.. I use my hands to remove and replace. If you need a tool, its probably on too tight. You also don't need to replace your crush washer every change. I run a magnetic dimple but with a copper washer ( I don't use the valve, as I have a full skid plate which must be removed.. Rallyx setup).

Good luck
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Old 03-23-2019, 02:04 PM   #7
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That awkward moment when you realize the function of gravity and how it works.
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Old 03-23-2019, 03:43 PM   #8
Charlie-III
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Quote:
Originally Posted by GlarryHoodDIT View Post
That awkward moment when you realize the function of gravity and how it works.
Come on......no such thing as gravity....the Earth sucks......

BTW, some filters have an antidrain check valve internally, thus lose little oil with engine off.....
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Old 03-23-2019, 05:05 PM   #9
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Thanks, guys.

It all went very smoothly, after giving it maybe 10 minutes to drain and a couple minutes "cracked" but not removed, only a very shallow puddle of oil remained in the center when I did pull the filter completely off. Truly a no mess, no fuss little job. Wish the filter change for all my cars was this easy.

This time at least, the suggested "initial contact + 3/4 turn" lined up very nicely with a 124 in*lb "click" (I do have a decent collection of torque wrenches, ranging from 120 in*lbs to 300 ft*lbs, so it's no big deal to pull the right one for the job).


Norm
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Old 03-25-2019, 01:49 PM   #10
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So much humble bragging
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Old 03-25-2019, 04:21 PM   #11
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Quote:
Originally Posted by Norm Peterson View Post
This time at least, the suggested "initial contact + 3/4 turn" lined up very nicely with a 124 in*lb "click" (I do have a decent collection of torque wrenches, ranging from 120 in*lbs to 300 ft*lbs, so it's no big deal to pull the right one for the job).
Torque wrench to install an oil filter.

Now I've heard it all.

Did you check the specific gravity of your washer fluid to ensure it was within spec too?
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Old 03-25-2019, 08:45 PM   #12
Norm Peterson
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Quote:
Originally Posted by rtv900 View Post
Torque wrench to install an oil filter.

Now I've heard it all.
Don't tell me you've never wondered how close your "initial contact plus X rotation" really was. This up-top easy-to-reach filter made it very easy to find out.


Quote:
Did you check the specific gravity of your washer fluid to ensure it was within spec too?
Please post whatever s.g. spec you're using and I'll let you know if my car's fluid is OK. Deal?


Norm
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Old 03-25-2019, 09:02 PM   #13
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Quote:
Originally Posted by rtv900 View Post
Torque wrench to install an oil filter.

Now I've heard it all.

Did you check the specific gravity of your washer fluid to ensure it was within spec too?
Down, boy! Hiel! Someone is self sufficient! Slow down the flameage!

Norm looked up the torque spec on his own. Norm didnít ask the Internet or just crank her on good n tite. Norm doesnít strap on ssqvís or buy sketchy off the shelf tunes. Why? Because norm cares.

Nasioc, be more like Norm.
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Old 03-26-2019, 07:41 AM   #14
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Quote:
Originally Posted by Norm Peterson View Post
Don't tell me you've never wondered how close your "initial contact plus X rotation" really was. This up-top easy-to-reach filter made it very easy to find out.



Please post whatever s.g. spec you're using and I'll let you know if my car's fluid is OK. Deal?


Norm
No I've never wondered that even for a second.

I use SG fluid of 0.999975 to 1.000025. I'll admit, I once had a reading of 1.000028 and I let it slide because I was on a road trip.
Otherwise I'd be pumping out that fluid and replacing it ASAP right before the final step of assuring the reservoir cap snapped over the lip with a finger pressure of 9.8-11.4 pounds.
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Old 03-26-2019, 08:30 AM   #15
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Quote:
Originally Posted by rtv900 View Post
No I've never wondered that even for a second.

I use SG fluid of 0.999975 to 1.000025. I'll admit, I once had a reading of 1.000028 and I let it slide because I was on a road trip.
Otherwise I'd be pumping out that fluid and replacing it ASAP right before the final step of assuring the reservoir cap snapped over the lip with a finger pressure of 9.8-11.4 pounds.
Hate to tell you this, but I think your washer fluid supplier has been cheating you by diluting what he receives with ordinary tap water and selling it as undiluted. S.g. should be 0.96 or a bit lower.


I'd be ashamed of myself if I didn't get curious about lots of little things like this oil filter torque spec.


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Old 03-26-2019, 10:02 AM   #16
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Quote:
Originally Posted by Norm Peterson View Post
I'd be ashamed of myself if I didn't get curious about lots of little things like this oil filter torque spec.
Uhhhh, there is no oil filter torque spec FYI, that's the point.
That's why they just say spin it on until the rubber contacts and then go 3/4 turn, done.

Or if you go to a quick lube place they spin it on until the rubber contacts, and then mount up an impact wrench and tighten it down to 400 ft/lbs so that no human other than George the Animal Steele can loosen it with their hands.
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Old 03-26-2019, 10:09 AM   #17
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Quote:
Originally Posted by simpleJ View Post
Down, boy! Hiel! Someone is self sufficient! Slow down the flameage!

Norm looked up the torque spec on his own. Norm didnít ask the Internet or just crank her on good n tite. Norm doesnít strap on ssqvís or buy sketchy off the shelf tunes. Why? Because norm cares.

Nasioc, be more like Norm.
QFT
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Old 03-26-2019, 11:09 AM   #18
Norm Peterson
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Quote:
Originally Posted by rtv900 View Post
Uhhhh, there is no oil filter torque spec FYI, that's the point.
That's why they just say spin it on until the rubber contacts and then go 3/4 turn, done.
I don't care if you don't want to take my word for it, so here's a copy/paste straight from the shop manual for you to read.

Quote:
Originally Posted by 2018 WRX STi factory shop manual, page LU(w/o STI)-48
Clean off water or dust from the oil element mating surface using air.
ST 498547000 OIL FILTER WRENCH
B: INSTALLATION
CAUTION:
• Do not use any oil filters other than that of 80 mm (3.15 in) dia. ◊ 65 mm (2.55 in) height.
• Do not tighten excessively, or oil may leak.
1) Clean the oil filter installation surface.
2) Obtain a new oil filter and apply a thin coat of engine oil to the seal rubber.
3) Install the oil filter by turning it by hand, being careful not to damage the seal rubber of the oil filter.
4) Further tighten the oil filter (approx. 3/4 rotation) after the seal rubber of the oil filter comes in contact with
the oil cooler. When using a torque wrench, tighten it to 14 N∑m (1.4 kgf-m, 10.3 ft-lb).

In case you don't have a FSM to double-check my accuracy, then I urge you to read ALL of the text that appears on the filter itself. Especially the second line under the big lettering "CAUTION", where it says "Tightening torque 12 ~ 16 N*m, which has a mean value of . . . wait for it . . . 14 N*m.


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Old 03-26-2019, 11:47 AM   #19
rtv900
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cool man, I guess I should be using a torque wrench to tighten my oil filter.

But. . . . . . .wait for it. . . . . I don't since it's F-ing pointless
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Old 03-26-2019, 12:25 PM   #20
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Some applications where your hand can't access calls for torque settings.
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Old 03-26-2019, 12:40 PM   #21
Norm Peterson
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Quote:
Originally Posted by jasonwrx86 View Post
Some applications where your hand can't access calls for torque settings.
Of course. I didn't say I've always used a torque wrench on an oil filter. Just on this one, and just once (so far).

You haven't lived as an oil change tech until you've changed the filter on a 1987 Nissan Maxima with 5MT.


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Old 03-26-2019, 12:59 PM   #22
Norm Peterson
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Quote:
Originally Posted by rtv900 View Post
cool man, I guess I should be using a torque wrench to tighten my oil filter.
Doing so wouldn't be wrong.


Quote:
But. . . . . . .wait for it. . . . . I don't since it's F-ing pointless
effing pointless would be posting opinion that's clearly contrary to readily available mfr information and easily provable as false.


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Old 03-26-2019, 03:06 PM   #23
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Quote:
Originally Posted by Norm Peterson View Post
effing pointless would be posting opinion that's clearly contrary to readily available mfr information and easily provable as false.
Norm
I can see you are very sensitive to your oil filter tightening method.
final point:
I'd wager my next 10 paychecks against yours that 99% of DIY guys have NEVER used a torque wrench on an oil filter and also NEVER had any oil filter related issue that could/would have been solved by using said torque wrench.
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Old 03-26-2019, 04:19 PM   #24
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Rtv is a keyboard warrior, but like 10 years after it was cool/funny
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Old 03-26-2019, 05:21 PM   #25
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Quote:
Originally Posted by f22boy View Post
Rtv is a keyboard warrior, but like 10 years after it was cool/funny
I've legit, not once, seen him contribute something useful

He is funny sometimes though
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