Changing Front Differential Fluid. Automatic Transmission - Page 2 - Subaru Outback - Subaru Outback Forums

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Old 08-20-2009, 11:39 AM   #11 (permalink)
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I've heard this is a good cocktail mix for front and rear diffs ('98 OB)


3 units X Redline 75W90NS (75%)
1 units X Redline Shockproof Lightweight (25%)


For the Rear Diff: use Redline Shockproof Heavyweight (vs. Lightweight)
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Old 08-20-2009, 01:24 PM   #12 (permalink)
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Quote:
Originally posted by bobmac99
I've heard this is a good cocktail mix for front and rear diffs ('98 OB)


3 units X Redline 75W90NS (75%)
1 units X Redline Shockproof Lightweight (25%)


For the Rear Diff: use Redline Shockproof Heavyweight (vs. Lightweight)
I'm pretty sure that cocktail mix is for manual transmissions as it's almost 2 quarts too much.

On the Auto transmission, the front & rear diffs combined take a little over 2 quarts.
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Old 08-20-2009, 02:16 PM   #13 (permalink)
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bobmac99,

Cocktail(s) are alcoholic beverages for people not for cars.

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~Button
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Old 10-28-2009, 03:54 PM   #14 (permalink)
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Quote:
Originally posted by kmltick


I'm pretty sure that cocktail mix is for manual transmissions as it's almost 2 quarts too much.

On the Auto transmission, the front & rear diffs combined take a little over 2 quarts.

He said 3 PARTS and 1 PART NOT 3 QUARTS and 1 QUART. 1 part can be 1 oz 1 cup 1 litre, just divide the TOTAL amount neede by 4 and that is your 1 part equivalent.
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Old 01-25-2010, 05:12 PM   #15 (permalink)
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My 06OBXT seems to indicate that changing the diff oil is not required ?

Is this correct ?
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Old 01-26-2010, 03:18 AM   #16 (permalink)
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Quote:
Originally posted by mhyne
My 06OBXT seems to indicate that changing the diff oil is not required ?

Is this correct ?
If it's a manual transmission then that's correct - the front differential shares it's lubrication with the gearbox itself.

If it's automatic transmission then the front differential has it's own oil sump/dipstick and uses GL-5 gear oil, not like the ATF-HP for the auto gearbox.
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Old 01-26-2010, 11:18 AM   #17 (permalink)
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I think the manual does state for certain things that the oil is good for the life of the vehicle.

The problem I see with that is "The life of the vehicle" means "Until the Warranty runs out"

I'm at 120K miles and ticking. I don't even remember ever having a warranty. (:
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Old 02-05-2010, 06:18 AM   #18 (permalink)
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Thank you gentlemen, your posts were most informative.

Did anyone identify the thread size of the drain plug, please? Is it M20 X 1.5 ? The same as the engine oil drain plug?

Thank You
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Old 03-09-2010, 10:37 AM   #19 (permalink)
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Brucey,

Did you use an extension on the socket wrench to get the drain bolt undone? It seems that it is kind of tight in there with just the socket and wrench.

Thanks,
Andre
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Old 06-06-2010, 10:39 PM   #20 (permalink)
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For those looking for a T70 Torx bit, I found mine at Autozone for $3.99.
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