Rear Diff Fluid Topping Off

Reply Subscribe

Thread Tools

Search this Thread

Nov 11, 2011 | 04:02 PM

Sailor182

Thread Starter

Senior User

Joined: Aug 2010

Posts: 105

Likes: 0

From: Upstate of South Carolina

Rear Diff Fluid Topping Off

Team, I have a question? I have what I thought was a minor rear diff seal leak! So, I start to top off, and used 1 qt of fluid. Is this bad news? I am scheduled to have this seal repaired next Thursday. The rear diff did not appear to be that wet. Any opinions are welcomed.

Nov 11, 2011 | 04:45 PM

JOHN2001

Logistics Pro

Joined: Dec 2010

Posts: 4,738

Likes: 15

From: Temperance, MI

It could have been there for a long time and you didnt notice it. Just top it off. Youll be fine but I would check it every few days so you know just how bad it is and if its low again just fill it up until you can get it changed

Nov 11, 2011 | 05:33 PM

cj45lc

Cargo Master

Joined: Feb 2010

Posts: 2,298

Likes: 94

From: Delta, CO

you did fill it at the plug on the driver side of the diff ?

a quart is about 1/3 of the total capacity of diff, I would be real surprised that the diff wasn't wet

Nov 11, 2011 | 08:11 PM

Bonanza35

Lead Driver

Joined: Sep 2005

Posts: 9,399

Likes: 188

From: Norco,CA

Check the vent tube and make sure it is not blocked or pinched.
Chet

Nov 11, 2011 | 08:29 PM

Sheldon Plankton

Senior User

Joined: Oct 2009

Posts: 453

Likes: 0

From: Dade City, FL

I've been there and done that with a pinion seal leak. Just keep it full from now on and don't worry about it. It got a little low and there's nothing you can do about it now. I would bet good money you won't have any further problems. I didn't.

Nov 11, 2011 | 08:47 PM

microdevil45

Senior User

Joined: Oct 2009

Posts: 411

Likes: 1

From: Plant City

Quote:

Originally Posted by Bonanza35

Check the vent tube and make sure it is not blocked or pinched.
Chet

This is to keep it from pressurizing correct?

Nov 11, 2011 | 09:45 PM

JOHN2001

Logistics Pro

Joined: Dec 2010

Posts: 4,738

Likes: 15

From: Temperance, MI

Quote:

Originally Posted by microdevil45

This is to keep it from pressurizing correct?

Yes simple but affective

Top 10 Ford Truck Tragedies

Joe Kucinski

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

Brett Foote

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Michael S. Palmer

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Verdad Gallardo

10 Best Ford Truck Engines We Miss the Most!

Joe Kucinski

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Brett Foote

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Michael S. Palmer

10 Most Surprising 2026 Ford Truck Features!

Joe Kucinski

Top 10 Ford Trucks Coming to Mecum Indy 2026

Brett Foote

5 Best / 5 Worst Ford Truck Wheels of All Time

Joe Kucinski

Nov 12, 2011 | 12:45 PM

Sailor182

Thread Starter

Senior User

Joined: Aug 2010

Posts: 105

Likes: 0

From: Upstate of South Carolina

I went on a 300 mile trip pulling a heavy trailer at hyway speeds, went I got home and was updocking the trailer, saw spots of oil on my bumper, then noticed how wet the bottom of the diff was.

Nov 12, 2011 | 01:03 PM

#10

Bonanza35

Lead Driver

Joined: Sep 2005

Posts: 9,399

Likes: 188

From: Norco,CA

Quote:

Originally Posted by Sailor182

I went on a 300 mile trip pulling a heavy trailer at hyway speeds, went I got home and was updocking the trailer, saw spots of oil on my bumper, then noticed how wet the bottom of the diff was.

Sounds like the vent tube is blocked. Take it off blow thur it and replace. The clamp that held mine on was pinching the tube closed.

Chet