Rear differential fluid math not adding up

Rear differential fluid math not adding up

This is a discussion on Rear differential fluid math not adding up within the 2016 Ford F150 Ecoboost Chat forums, part of the 2nd Gen F150 Ecoboost category; I just installed a B&M rear differential cover. The manual for our truck states there is 5.5 pints of fluid in there. B&M says their ...

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Thread: Rear differential fluid math not adding up

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    Ecoboost Jr Member Rds912's Avatar

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    Rear differential fluid math not adding up

    I just installed a B&M rear differential cover. The manual for our truck states there is 5.5 pints of fluid in there. B&M says their cover adds 1/2 a qt. Thatís a total of 6 pints or 3 quarts. Iíve put 7 qts in and there is no sign of it being near the fill plug. ???????

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    Eco-Beast ptown's Avatar

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    You need to put the drain plug in before adding oil 🤷🏼*♂️


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    Ecoboost Jr Member Rds912's Avatar

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    I knew I forgot something.

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    Ecoboost Master GearHead_1's Avatar

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    Quote Originally Posted by Rds912 View Post
    I just installed a B&M rear differential cover. The manual for our truck states there is 5.5 pints of fluid in there. B&M says their cover adds 1/2 a qt. That’s a total of 6 pints or 3 quarts. I’ve put 7 qts in and there is no sign of it being near the fill plug. ???????
    You’ve put quarts ​in the differential? I find that almost unbelievable. Did you mean 7 pints?
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    Ecoboost Jr Member Rds912's Avatar

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    Yep 7 full quarts

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    Eco-Beast Shrek's Avatar

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    Did you take the gears out when you installed the cover?! Good grief! 7 quarts?!
    I mean, that's a LOT of fuild!
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    Quote Originally Posted by Rds912 View Post
    I just installed a B&M rear differential cover. The manual for our truck states there is 5.5 pints of fluid in there. B&M says their cover adds 1/2 a qt. That’s a total of 6 pints or 3 quarts. I’ve put 7 qts in and there is no sign of it being near the fill plug. ???????
    Is the truck on level ground?
    13 SuperCrew Ruby Red 302A, 4x4 6.5 box, 3.31, Roush 22's. Twin catch cans, "leveled" with Bilsteins (-2 front, -3 rear), AirLift, SCT. Other's may have displacement on demand... I have an endless supply of torque at my right foot's demand.


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    Ecoboost Pro Boostking's Avatar
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    Just watching this one because I'm curious. 7 quarts...?
    2013 Tuxedo Black SCrew Ecoboost FX4 w Appearance Package 5.5 box, 3.73. Mods: SCT LWTS+ custom tuned, Full-Race/BorgWarner OEM+ "GT Turbos", Tifosi Exhaust Manifolds, RTR HPFP, CP-E FMIC w/ TurboSmart SuperSonic, CP-E 3" Catted Downpipes, AFE Magnum Force Pro Dry-S Intake, Borla Touring Cat-Back, Terra G2s 305/55/20 on Method N/V 20x9, Leveled Bilstein 5100 RHA 1.5", 20" LED light bar, Hellwig Rear Sway Bar, Morimoto LED Fogs, Extang Revolution Tonneau Cover, Custom LED bed lighting, DeeZee Tailgate Assist, Tailgate Remote Power Lock Mod, MaxLiner Floor Mats, Ford OEM Underseat Cargo Box, LED Interior and Reverse Lights (Diode Dynamics), Recon LED 3rd Brake Light, NL Door Detents, .50 cal antenna, Custom Coding (ForScan)

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    Ecoboost Veteran Beaker80's Avatar

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    This video they put 7 QUARTS!

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    Super Moderator Elmore328's Avatar
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    Quote Originally Posted by Beaker80 View Post
    This video they put 7 QUARTS!

    And that was in cover that was designed with "a little extra fluid capacity".
    -Clark

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