Changing diff fluid
Thread Starter
|
Laughing Gas
Joined: Oct 2014
Posts: 962
Likes: 114
From: Middle TN
Changing diff fluid
Hey all, my 2015 F250 XLT, CC 4X4 PSD just rolled up to 60K miles. Trying to be proactive, I am changing the trans fluid/filter, and the transfer case fluid.
When are you all changing the diff fluid?
Manual says lubed for life,,,,don't really buy that. But,,,,am I a little early at 60K? Wait till 100K? This is the Ford 10.5" 3.31 ratio, my heaviest trailer is about 11K lbs. Not really worrying about the front axle just yet, I think this truck has been 4 wheel drive maybe 3 times. Unless I am missing it somewhere, what is the change interval on the front diff?
When are you all changing the diff fluid?
Manual says lubed for life,,,,don't really buy that. But,,,,am I a little early at 60K? Wait till 100K? This is the Ford 10.5" 3.31 ratio, my heaviest trailer is about 11K lbs. Not really worrying about the front axle just yet, I think this truck has been 4 wheel drive maybe 3 times. Unless I am missing it somewhere, what is the change interval on the front diff?
Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 118
From: Tallassee, ALabama
If one thinks about it, there are millions, if not billions of vehicles on the highways around the world that have never had the differential fluid changed in 10, 20, 50 years and they have never had a problem. The current fluid is full synthetic designed for long life extreme service. The owner's manual states about not needing to be changed unless water has been introduced to the rear axle assembly.
I do not plan on changing the fluid in my 2015 per owner's manual.
I do not plan on changing the fluid in my 2015 per owner's manual.
Postmaster
Joined: Jul 2015
Posts: 4,392
Likes: 22
From: very South Texas
for whats it worth..
my 2012 F 250, 6.2L Gas 2 wheel drive.. was a fleet/lease with all service records..
9 / 2011 put on the road... I purchased it 8 / 2015 with 136.000 miles.
4,100 run hours.. 600 idle hours... so a Freeway truck
I changed the gear lube.... as it was never done.. it was Still Clean... and no trash at the bottom of the diff housing.
I would do it at 100,000 miles. just that would be me.
as for the front axle.. you better start using is a bit more ( even for a 1/4 mile ).... to keep all the parts lubed... fluid drain-off can cause RUST on machined parts inside the housing.... my opinion.
my 2012 F 250, 6.2L Gas 2 wheel drive.. was a fleet/lease with all service records..
9 / 2011 put on the road... I purchased it 8 / 2015 with 136.000 miles.
4,100 run hours.. 600 idle hours... so a Freeway truck
I changed the gear lube.... as it was never done.. it was Still Clean... and no trash at the bottom of the diff housing.
I would do it at 100,000 miles. just that would be me.
as for the front axle.. you better start using is a bit more ( even for a 1/4 mile ).... to keep all the parts lubed... fluid drain-off can cause RUST on machined parts inside the housing.... my opinion.
Thread Starter
|
Laughing Gas
Joined: Oct 2014
Posts: 962
Likes: 114
From: Middle TN
Good advice, I lock the hubs (I have manual ones) and drive it to work once every week or 2. The front axle is a Dana? Is there a change interval for that one or is 100K ok there too?
Laughing Gas
Joined: Oct 2017
Posts: 922
Likes: 7
If one thinks about it, there are millions, if not billions of vehicles on the highways around the world that have never had the differential fluid changed in 10, 20, 50 years and they have never had a problem. The current fluid is full synthetic designed for long life extreme service. The owner's manual states about not needing to be changed unless water has been introduced to the rear axle assembly.
I do not plan on changing the fluid in my 2015 per owner's manual.
I do not plan on changing the fluid in my 2015 per owner's manual.
Laughing Gas
Joined: Oct 2017
Posts: 922
Likes: 7
Hey all, my 2015 F250 XLT, CC 4X4 PSD just rolled up to 60K miles. Trying to be proactive, I am changing the trans fluid/filter, and the transfer case fluid.
When are you all changing the diff fluid?
Manual says lubed for life,,,,don't really buy that. But,,,,am I a little early at 60K? Wait till 100K? This is the Ford 10.5" 3.31 ratio, my heaviest trailer is about 11K lbs. Not really worrying about the front axle just yet, I think this truck has been 4 wheel drive maybe 3 times. Unless I am missing it somewhere, what is the change interval on the front diff?
When are you all changing the diff fluid?
Manual says lubed for life,,,,don't really buy that. But,,,,am I a little early at 60K? Wait till 100K? This is the Ford 10.5" 3.31 ratio, my heaviest trailer is about 11K lbs. Not really worrying about the front axle just yet, I think this truck has been 4 wheel drive maybe 3 times. Unless I am missing it somewhere, what is the change interval on the front diff?
It's an easy job. It might be overkill but I play it safe. If you tow regularly I would definitely do the rear diff every 30k. The front maybe not as much.
Tuned
Joined: Jun 2015
Posts: 344
Likes: 7
I don't buy the claim to never change the fluid. I'm thinking to replace the fluid in my '99 with 65k miles here pretty soon. I put Amsoil Sever Gear in my Trailblazer and haven't had any issues. When I get my butt around to actually doing the job, I'll put some of the Amsoil Sever Gear stuff in my F-250 as well. All of the opinions, and independent research, I've done seem to indicate that Amsoil is top of the line stuff. I'm willing to spend a few bucks and a few hours to prolong the life of my vehicles.
Trending Topics
Laughing Gas
Joined: Oct 2017
Posts: 922
Likes: 7
I don't buy the claim to never change the fluid. I'm thinking to replace the fluid in my '99 with 65k miles here pretty soon. I put Amsoil Sever Gear in my Trailblazer and haven't had any issues. When I get my butt around to actually doing the job, I'll put some of the Amsoil Sever Gear stuff in my F-250 as well. All of the opinions, and independent research, I've done seem to indicate that Amsoil is top of the line stuff. I'm willing to spend a few bucks and a few hours to prolong the life of my vehicles.
I stay away from snake oils. The diffs get synthetic and the trans and transfer case get oem fluids.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
yardbird
1997 - 2006 Expedition & Navigator
7
Apr 22, 2006 11:58 PM