Notices
1999 - 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines
Sponsored by:
Sponsored by: Real Truck

Rear Diff fluid

Old Dec 15, 2019 | 07:22 PM
  #1  
polar888's Avatar
polar888
Thread Starter
|
5th Wheeling
15 Year Member
Joined: Nov 2006
Posts: 32
Likes: 0
Rear Diff fluid

My 2001 F250 requires 8" of friction modifier fluid in the rear diff. The valvoline synthetic says "contains friction modifier fluid". Will filling the rear diff with this get me the 8" I need? I cannot find out the ratio per bottle.
This is my first time working on this truck, still learning.

Regards,
 
Reply
Old Dec 15, 2019 | 08:42 PM
  #2  
'01V10's Avatar
'01V10
Tuned
Joined: Aug 2018
Posts: 267
Likes: 31
The valvoline should be fine like it is. If you get chatter from you LSD you can add some more friction modifier, but you shouldn't need to.
 
Reply
Old Dec 16, 2019 | 12:23 PM
  #3  
geekwithoutacause's Avatar
geekwithoutacause
Laughing Gas
Joined: Oct 2017
Posts: 922
Likes: 7
I've used that valvoline fluid and I never added the modifier. LSD worked fine.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
wizzy214
1968-Present E-Series Van/Cutaway/Chassis
2
Feb 15, 2018 06:45 PM
01raptor
1999 - 2003 7.3L Power Stroke Diesel
10
Jul 1, 2011 09:19 AM
aceltx09
1999 - 2016 Super Duty
4
Sep 12, 2010 08:03 PM
Badford
1999 - 2016 Super Duty
1
May 16, 2004 11:07 PM
droff
1997 - 2003 F150
4
Apr 6, 2004 10:44 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 11:39 PM.

story-0
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-05-30 18:33:59


VIEW MORE
story-1
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-2
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-3
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-4
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-5
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-6
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-7
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-8
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-9
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE