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12-24-2012, 01:03 PM
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#1 (permalink) |
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Registered User
Join Date: Nov 2007
Location: central NY USA
Car: 2003 LLBean H6 Outback
Posts: 3,354
Feedback Score: 0 reviews
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Welcome me to the 'noisy front diff' club
So if the front diff pinion bearings are getting noisy, any thoughts on if there is any lube or additive choice that can stretch out the time to repair?
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12-25-2012, 12:15 AM
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#3 (permalink) |
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Registered User
Join Date: Nov 2007
Location: central NY USA
Car: 2003 LLBean H6 Outback
Posts: 3,354
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Just shy 200,000 miles so some things are bound to happen, with plenty of full-throttle romps and the occasional run up to max speed taken into account...
The noise isn't that bad now, but it is progressing. Front diff fluid has always looked and smelled fine, has even been changed on occasion. There's no such thing as magic goo in a bottle, but sometimes the right stuff can stretch it out. |
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12-25-2012, 05:35 PM
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#4 (permalink) |
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Cheesehead
Join Date: Sep 2004
Location: Wisconsin
Car: '03 Outback H6-3.0 Black Granite Pearl
Posts: 749
Feedback Score: 0 reviews
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Mine went at 225k miles.
First, check the magnetic drain plug for metal. If there are chunks, not dust, you have a problem. The heavy Lucas additives can slightly delay the inevitable.... I ended up with a Subaru-rebuilt tranny/front diff assembly...... |
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12-25-2012, 05:42 PM
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#5 (permalink) | |
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Registered User
Join Date: Jan 2011
Location: New England
Car: 2008 Outback 3.0R L.L. Bean
Posts: 1,672
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Quote:
__________________
 2008 Subaru Outback 3.0R L.L. Bean Edition (No Nav, Harvest Gold) Factory Trailer Hitch | Weathertech Floor Liners | Factory Subwoofer Yokohama Geolandar A/T-S Other Subarus: '98 Legacy GT Wagon, '98 Limited OBW, '01 Limited OB Sedan |
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12-26-2012, 07:00 AM
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#6 (permalink) |
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Registered User
 
Join Date: Aug 2012
Location: Austin
Car: 2001 VDC, 2000 Outback 5MT (on the cheap)
Posts: 3,035
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I haven't found out yet, either. Been to 122 with plenty of room to 7k and another gear to go.
The Trans has to come out for any diff repair, so rebuilding the trans while its out is a good idea. When you get to, have the shift kit available and add in a large trans cooler. |
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01-05-2013, 05:54 PM
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#7 (permalink) |
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Registered User
Join Date: Nov 2007
Location: central NY USA
Car: 2003 LLBean H6 Outback
Posts: 3,354
Feedback Score: 0 reviews
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I've changed out the front fluid for lucas with 50% lucas additive, no change in the noise.
Took the crud off the magnet, the flakes here are incredibly thin and might just be tiny particles held together because they are magnetized, no solid pieces at all. |
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01-09-2013, 04:42 PM
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#8 (permalink) |
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Registered User
Join Date: Nov 2007
Location: central NY USA
Car: 2003 LLBean H6 Outback
Posts: 3,354
Feedback Score: 0 reviews
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posted a vid of the noise, the persistent rumble is a wheel bearing, pinion noise is the one that comes and goes as I add/reduce throttle.
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01-10-2013, 01:19 PM
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#9 (permalink) |
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Cheesehead
Join Date: Sep 2004
Location: Wisconsin
Car: '03 Outback H6-3.0 Black Granite Pearl
Posts: 749
Feedback Score: 0 reviews
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I would guess anything larger than dust qualifies as chunks. Any small pieces coming loose would likely end up going thru the gears and getting flattened. Possibly further damaging the gear surfaces.
The noise coming/going during throttle (load) on/off is consistent with my failure. After a certain point, the heavy Lucas oil no longer made a difference in the noise level. |
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