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Old 09-30-2011, 01:08 PM   #1
Dagmar
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Legacy 2.5 bottom end oil leak

OK, I've searched the threads and have a question or two I'm hoping you wise lads and lasses can help me with:
I am getting a persistant oil seep from my 07 Leg' wagon that is getting to the exhaust and making the car smell like an old GM diesel. I get spotting on the garage floor from near the oil filter, but only when the car is running, not sitting. I started using the K&N filter because of the nut on the bottom of the filter that makes it a lot easier to change the oil and not burn my ^&&$#!^& hands everytime. Has anyone else used these and had the seal leak?
I am considering going to a Baldwin B1402 because it's about an inch longer and so should be easier to install? Thoughts?
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Old 09-30-2011, 01:34 PM   #2
Yomillio
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I've been running a K&N oil filter on my '05 RS with no real issues. There does appear to be a very slight amount of oil on the bottom of the filter, but it hasn't created spotting on my driveway or anything.

That probably doesn't help much, but I figured there is probably only a few of us running K&N filters.
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Old 09-30-2011, 07:41 PM   #3
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For Cummins applications, the K&N ranks amongst the crappiest of filters tested. YMMV.

You've got an oil cooler that the filter screws onto, right? The o-ring that seals the top of the cooler to the block tends to leak with age. It's an easy enough fix, but you'll have to remove the filter. The book says to drain the coolant and pull the hoses off the cooler, but you can get the new o-ring in by just pulling it down a little.
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Old 10-01-2011, 04:50 PM   #4
AliBenn
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^^^this. $7 oil cooler seal....you need a 24mm to remove oil cooler
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Old 10-05-2011, 12:34 PM   #5
Dagmar
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Interesting tidbit on the K&N and I thought the filter was spinning up to the block directly, surrounded by the exhaust manifold. Hence me getting warm hands, and I hate soaking my mechanics gloves in oil. It really is a stupid location. I doing an oil change this weekend, so I'll have a look and maybe post some pics for someone else's edification in the future. I bought the Baldwin B1402 (spec is for the 1400 but the 1402 is 3.5"versus 2 5/8" long) versus the K&N, the nearest Subie dealer is 300 km away in Edmonton, so stock isn't an option right now. I'll look into the oil seal as well.

Last edited by Dagmar; 10-06-2011 at 06:21 PM.
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Old 10-05-2011, 08:12 PM   #6
CosmoTheCat
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OEM is always available online, but I'm not familiar with any dealers in Canada who have internet parts departments to avoid customs/duty.

Here's a picture of what should be tucked up in the exhaust:

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Old 10-06-2011, 03:33 AM   #7
williaty
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Why on earth does the 07 Leggy 2.5i get an oil cooler when none of the other NAs do?
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Old 10-06-2011, 10:02 AM   #8
V8Slayer
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Could the leak also be the oil pump O ring? I would be in the same general area.
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Old 10-06-2011, 06:19 PM   #9
Dagmar
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@williaty: Maybe 'cos Leg drivers are special and not in the l'il school bus kind of way.... :0) More than likely due to the extra mass of the car and the likelihood you'll be hauling a trailer/toys of some kind would be my suspicion. Although why they wouldn't throw one in on all the models is kind of beyond me. The teeny tiny oil filter was a shock the first time I changed it too. Did you know it's the same filter for use on a Kubota lawn tractor? Mayhap I'll just order the cooler seal as suggested and have them mail it up from the dealer. Once the car is up on the ramps I'll have a good look around. Burning oil smell is oogy; and annoying.
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Old 10-06-2011, 07:05 PM   #10
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If you have one, can you take a picture of your water pump and the spigot for it? I'd be curious to see how they're plumbing the coolant side of the oil cooler since it's an SOHC NA. If it's easy to retrofit, it'd be a good option for Impreza guys wanting a simple oil cooler.
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Old 10-06-2011, 08:20 PM   #11
Dagmar
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No Problem.
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Old 10-06-2011, 10:31 PM   #12
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Quote:
Originally Posted by williaty View Post
Why on earth does the 07 Leggy 2.5i get an oil cooler when none of the other NAs do?
That's why I asked. I can't remember what's bolted to the bottom of every model/trim/engine...
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Old 10-10-2011, 08:04 PM   #13
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Today I started a timing belt job on a car that I thought had a leaking cam seal (driver's side), but it turned out to be the access hole where you pull the piston pins out - it was dumping oil. Easy enough fix.
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Old 10-17-2011, 12:21 PM   #14
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Hey all. After further investigation it looks as though the filter may have been the culprit after all. I cleaned up the bottom of the engine and haven't had any recurrence so far. @ williaty:
Here is the pic:
Sorry about the quality, it was the best I could do with everything else in the way.
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Old 10-17-2011, 12:24 PM   #15
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Also, here is the mount for the filter on my car....

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Old 10-09-2012, 07:39 PM   #16
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Default '08 leak?

Hi all,
I'm new to Subarus and the forum. I just bought a used '08 Impreza 2.5 wagon with 92,000 miles. I love the car but I'm worried that I've got some issues appearing.

I first noticed a mild burned oil smell after the engine is warm. Under the car there is oil around the passenger side head, and the filter. It's not wet with oil...more caked on oil. I'm worried that the head gasket may be leaking (although there doesn't seem to be any coolant contamination of the oil or vise versa). After reading this thread I think I'm going to replace the oil filter and clean everything up. Perhaps it's just the filter leaking? Would it be common for a head gasket to fail in an '08 with 92 K miles?

Thanks for any advice and thanks for a great forum.

Mike
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Old 10-09-2012, 10:04 PM   #17
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If your gasket were failing, it would show as external oil seepage, rather than oil and coolant mixing.
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Old 10-09-2012, 10:10 PM   #18
Mtn Mike
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I'll investigate more this weekend. Has anyone had an '08 headgasket blow?
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Old 10-09-2012, 10:21 PM   #19
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Quote:
Originally Posted by Counterfit View Post
If your gasket were failing, it would show as external oil seepage, rather than oil and coolant mixing.
It can do either. Sometimes you get a milkshake, sometimes you get a leaky diaper. The newer cars seem to leak out the bottom first but that's quickly followed by internal leaks.
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Old 10-09-2012, 10:45 PM   #20
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Also check behind the head towards the firewall. Oil could leak out of there and run down underneath before dripping. Can't hurt to check lines going to the turbo. Hope you get it figured out man good luck.
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Old 10-09-2012, 11:45 PM   #21
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Turbo? We don't need no steenking turbos.
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Old 10-12-2012, 04:14 PM   #22
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any drops of oil apearing at the bottom of the timing belt cover or oil pan?
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Old 10-13-2012, 10:50 AM   #23
Mtn Mike
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Quote:
Originally Posted by dead View Post
any drops of oil apearing at the bottom of the timing belt cover or oil pan?
No not that I can tell. Only around the right head and oil filter. It appears to be a slow leak, as nothing is "wet" with oil. It's just caked on oil. I'll try to get a picture of the area with the leak today...
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