Rear End Oil Capacity? - Ford Powerstroke Diesel Forum
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post #1 of 18 Old 02-10-2010, 09:08 AM Thread Starter
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Rear End Oil Capacity?

I'm gonna try out changing the oil and putting in some additive in my rear end cause im tired of the one leggers. Anyone know what the oil capacity on the 10.5's are??
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post #2 of 18 Old 02-10-2010, 09:18 AM
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bump i need to kmow this also

Vegistrokin
2000 XC 4x4

-CORY
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post #3 of 18 Old 02-10-2010, 10:26 AM
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im told its 6.9 pints, BUT...

i put the 08 cover on and couldnt get anymore than 3 quarts in

past trucks...
72 F350 2wd 390/auto
85 C10 4x4 (first & last chevy)
86 F150 2wd 300/4 spd
75 F100 4x4 460/auto & 38" Hawgs
77 F250 highboy 4x4 400/4 speed
76 F350 4x4 390/4 speed 6" lift 38" Hawgs
89 Eddie Bauer Bronco
79 Bronco 460/auto 35" Swampers
93 Lightning with KB 2.2
01 supercrew 2wd 5.4 liter
01 F250 Platinum 7.3 diesel 6" icon 35" procomps
...and currently a 75 F100, waiting for a 6.0 heart
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post #4 of 18 Old 02-10-2010, 10:56 AM
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Also, the more additive you put in there, the more the clutches will slip. Are you sure you have a limited slip diff? There is a tag on one of the rear cover bolts with some codes. Say you have a 3.73 ratio, the tag will read 3L.73 or something like that. The "L" means limited slip. If there isn't an L than you have an open differential, thus requiring NO additive. I had rear end service at Ford and they put additive in and charged me $25 for it- even though mine is open.

Will

2001 F250 CCSB Lariat 4X4
7.3 PSD, 4R100
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post #5 of 18 Old 02-10-2010, 11:06 AM Thread Starter
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Already checked the tags and the axle code on my door jam, its got limited slip. Just been reading that Ford puts way too much additive in the rear ends so I was gonna try out a little less additive.
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post #6 of 18 Old 02-10-2010, 11:36 AM
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yep...some suggest putting in 1/2 of the recomended amount and listen for chatter.

if it does add an ounce at a time until the chatter goes away.
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post #7 of 18 Old 02-11-2010, 11:56 AM Thread Starter
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I was talking about how much gear oil to put in. I'm gonna start with 2 oz of additive and add if needed.
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post #8 of 18 Old 02-11-2010, 02:25 PM
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Quote:
Originally Posted by 391dman View Post
I was talking about how much gear oil to put in. I'm gonna start with 2 oz of additive and add if needed.
yep...post #3...6.9 pints

past trucks...
72 F350 2wd 390/auto
85 C10 4x4 (first & last chevy)
86 F150 2wd 300/4 spd
75 F100 4x4 460/auto & 38" Hawgs
77 F250 highboy 4x4 400/4 speed
76 F350 4x4 390/4 speed 6" lift 38" Hawgs
89 Eddie Bauer Bronco
79 Bronco 460/auto 35" Swampers
93 Lightning with KB 2.2
01 supercrew 2wd 5.4 liter
01 F250 Platinum 7.3 diesel 6" icon 35" procomps
...and currently a 75 F100, waiting for a 6.0 heart
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post #9 of 18 Old 02-11-2010, 06:20 PM
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rear oil

just looked at my rear cover tags, it says 75w140 synthetic, and the other tag # starts with a "L" so I'm assuming limited slip. Is this the weight oil you'll are using, and synthetic???
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post #10 of 18 Old 02-11-2010, 09:08 PM
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Yes that is the correct weight and yes use synthetic. Did mine in December with Royal Purple.

2012 F350 XLT CCLB 4x4 6.7

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