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2005 Legacy GT Coolant Smell #4714977
04/03/18 10:00 AM
04/03/18 10:00 AM
Joined: Feb 2018
Posts: 132
Englewood, CO
funkymonkey1111 Offline OP
funkymonkey1111  Offline OP
Joined: Feb 2018
Posts: 132
Englewood, CO
This was the first Blackstone report on the car last month.

https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4689283/05_Legacy_GT--4800_miles,_Cast#Post4689283

Note that a slight amount of coolant was found in the sample.

I've driven 1200 miles since then. Soon after the oil change i smelled a faint coolant smell. Now, the coolant smell is getting much more pronounced, and the car will be going in to have it checked out. The car has not overheated (though after the a longer ride at highway speeds the temp gauge will rise a hair while sitting at an off-ramp). There is no foam in the oil from visual inspection.

The car has a new radiator within the last 2000 miles.


The question is-is it worth doing a new analysis at 1200 to see if there's any elevated coolant in the oil? Head gaskets were a problem on older subarus, but i don't think it's as much of a problem (if at all across the board) in 2005's and above. Or, just let the shop sort it out?

I did use Rotella T6 5w40 for the first time in this oil change.

Thanks!

Re: 2005 Legacy GT Coolant Smell [Re: funkymonkey1111] #4715035
04/03/18 10:53 AM
04/03/18 10:53 AM
Joined: Apr 2017
Posts: 1,162
SF BAY AREA, CA
dogememe Online content
dogememe  Online Content
Joined: Apr 2017
Posts: 1,162
SF BAY AREA, CA
Subarus, even 2005+ (while not as big of a problem as earlier) still like to lose head gaskets.


2010 Ford Escape FWD 2.5 ~90K Miles
Currently: Royal Purple 5W-30, Wix 51348
I prefer Royal Purple, Valvoline, Castrol, and O'Reilly oils.
Re: 2005 Legacy GT Coolant Smell [Re: dogememe] #4715057
04/03/18 11:11 AM
04/03/18 11:11 AM
Joined: Apr 2008
Posts: 12,913
Onondaga County
Miller88 Offline
Miller88  Offline
Joined: Apr 2008
Posts: 12,913
Onondaga County
Originally Posted By: dogememe
Subarus, even 2005+ (while not as big of a problem as earlier) still like to lose head gaskets.


Any EJ25 (na or turbo) is going to have head gasket problems eventually ...


18 Forester 2.5I 6M
00 Jeep Cherokee
01 Ford F-350 XL 4x4 5M
Re: 2005 Legacy GT Coolant Smell [Re: funkymonkey1111] #4715078
04/03/18 11:38 AM
04/03/18 11:38 AM
Joined: May 2009
Posts: 12,250
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,250
N.H, U.S.A.
Making the engine work too hard with that 40 grade.

I would use 2 qts of that and then balance of 10w30 QSUD.

Never needed MORE on a N.A. motor.

You may have a weep at a hose junction. os remnats boiling off. Spilled Glycol hangs around forever

Is that GT a turbo? That should be immune as the block deck is different than the NA motors.


2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: 2005 Legacy GT Coolant Smell [Re: ARCOgraphite] #4715102
04/03/18 11:53 AM
04/03/18 11:53 AM
Joined: Feb 2018
Posts: 132
Englewood, CO
funkymonkey1111 Offline OP
funkymonkey1111  Offline OP
Joined: Feb 2018
Posts: 132
Englewood, CO
Originally Posted By: ARCOgraphite
Making the engine work too hard with that 40 grade.

I would use 2 qts of that and then balance of 10w30 QSUD.

Never needed MORE on a N.A. motor.

You may have a weep at a hose junction. os remnats boiling off. Spilled Glycol hangs around forever

Is that GT a turbo? That should be immune as the block deck is different than the NA motors.


Yes, the GT is a turbo.

Re: 2005 Legacy GT Coolant Smell [Re: funkymonkey1111] #4715160
04/03/18 12:50 PM
04/03/18 12:50 PM
Joined: Feb 2007
Posts: 3,670
Southeast
meep Offline
meep  Offline
Joined: Feb 2007
Posts: 3,670
Southeast
miles on WP? back then the oem pumps had this uncanny ability to work for consistently 106,000. it was crazy. IDK about now. It could be weeping just a little. Blocks back then also were a little porous and you could smell it through them. Factory fix was a very mild dose of the equivalent to stop leak. I put a partial dose in my '97 for the same reason and never looked back.

That GT is a special car. A bunch of power in an already-torquey motor on a rock-solid chassis.

-M


2018 F150
2015 crv (wifey!)
Re: 2005 Legacy GT Coolant Smell [Re: funkymonkey1111] #4715166
04/03/18 12:57 PM
04/03/18 12:57 PM
Joined: Jan 2004
Posts: 4,248
California
nthach Offline
nthach  Offline
Joined: Jan 2004
Posts: 4,248
California
Can a shop a do a leak-down test or see if exhaust is entering the coolant? Subaru does call for adding their version of Holts RadWeld into the cooling system as a precaution on the EJ engines. The gaskets on those have been revised on the OEM level - Fel-Pro makes a variant of their MLS gasket just for the Subaru Boxers.

I did a timing belt and WP on a 2003 Forester with the EJ253(or 1) and I did see part of the head gasket through one of the cooling passages I think. It looked silverish, maybe OEM replacement.

Last edited by nthach; 04/03/18 01:00 PM.
Re: 2005 Legacy GT Coolant Smell [Re: nthach] #4715321
04/03/18 03:50 PM
04/03/18 03:50 PM
Joined: Feb 2009
Posts: 1,583
wv
krismoriah72 Offline
krismoriah72  Offline
Joined: Feb 2009
Posts: 1,583
wv
crawl underneath or have it put on a lift and shine a light on the bottom side of the heads.. easy to tell if you have a head gasket issue.


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