Warm Rear Differential?
Thread Starter
|
Postmaster
Joined: Aug 2005
Posts: 2,992
Likes: 2
From: Lancaster, MA
Warm Rear Differential?
Sould my rear differential be warm? Its not hot, but it is warm to the touch. I've never thought about, but mine seems to be warm when I come back from a drive. Just one of those dumb questions!
Elder User
Joined: Jun 2009
Posts: 560
Likes: 3
From: 92592
You'd be warm to if you got thrashed around like that lube does between all those gears!
The amount of moving parts in the drivetrain is amazing.
The older I get the more amazed I am these trucks don't just blow up in a ball of flames!
I have a headache now.
The amount of moving parts in the drivetrain is amazing.
The older I get the more amazed I am these trucks don't just blow up in a ball of flames!
I have a headache now.
Thread Starter
|
Postmaster
Joined: Aug 2005
Posts: 2,992
Likes: 2
From: Lancaster, MA
I'm with you. I pulled apart a 5.0 Mustang motor a few years ago just for fun and I was amezed with the 1000s of pieces that make a car or truck run/move/not blow up.
New User
Joined: Sep 2007
Posts: 24
Likes: 0
yeah warm is ok. smoking is not ok like mine started doing. if youre worried about it check the level of fluid. just pull out the plug and start putting fluid into it till fluid starts coming out of the hole.
Trending Topics
Posting Guru
Joined: Dec 2007
Posts: 1,361
Likes: 0
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
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
Thread Starter
|
Postmaster
Joined: Aug 2005
Posts: 2,992
Likes: 2
From: Lancaster, MA
Already checked the fluid and it was perfect. Right to the top. Right now it is just getting regular daily driving, MAYBE upto 20 miles a day tops. In the spring it will be hauling my 7K pound race car trailer about 120 miles roundtrip once a week.
Postmaster
Joined: Jun 2008
Posts: 2,564
Likes: 11
From: Wayyy NoCal, USA
Being a data loving techno-geek, I stuck a temperature sensor in there. Modern differentials use hypoid gears, which have a "sliding" interaction, which shears the oil and generates heat.
Normal driving, minimal load: Rarely more than 50 degrees over ambient.
Towing: Usually 50 to 100 degrees over ambient
Grinding up long grades (20+ minutes) with heavy loads: I've seen 150 over ambient. 255 on a 105 degree day.... That's pretty stinkin' hot, and I don't recommend the touch test!
This is with Mag-Hytek cover and Redline 75W140 synthetic.
Normal driving, minimal load: Rarely more than 50 degrees over ambient.
Towing: Usually 50 to 100 degrees over ambient
Grinding up long grades (20+ minutes) with heavy loads: I've seen 150 over ambient. 255 on a 105 degree day.... That's pretty stinkin' hot, and I don't recommend the touch test!
This is with Mag-Hytek cover and Redline 75W140 synthetic.
Posting Guru
Joined: Dec 2007
Posts: 1,361
Likes: 0
I have a feeling the wheels in your sig don't help either. A Mag-Hytec cover or Ford Aluminum would be good for you. The Mag-Hytec actually has extended capacity along with a dipstick, a top fill port, and a bottom drain plug.