Diff Fluid - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 8 Old 11-26-2012, 05:58 PM Thread Starter
Member
 
Join Date: Aug 2012
Location: Winder
Posts: 70
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Diff Fluid

What brands and weight are yall using?

I see where Ford recommends synthetic fluid but I will not be using it. Currie enterprise did a test years ago on synthetic diff fluid vs dinosaur fluid and found the chunk to be be cooler on synthetic. That usually is a good thing, but they found out that the synthetic fluid did not take the heat away from the R&P like conventional oil did. Yes, I confirmed this with Currie after finding out.
Burner5509 is offline  
post #2 of 8 Old 11-26-2012, 09:07 PM
Compression Ignition Addict
 
Doss's Avatar
 
Join Date: Sep 2012
Location: The 'Sip
Posts: 734
Thanks: 10
Thanked 10 Times in 10 Posts
Mentioned: 3 Post(s)
Quoted: 17 Post(s)
Feedback Score: 0 reviews
That's nice and everything, but are you still under warranty? If you are, I'd run what Ford says to.

I'm running Mobil 1 syn in whatever weight the manual said to run.

Also, with a lot of things, any time someone did a test "years ago" on the current state of tech in a moving field, I throw that out the window (usually) if I'm applying it to today's tech. Another thing, if no one else did testing to support it (or even against it really), I'd be a little suspicious. That's my nature as an engineer and scientist. I'd have to know all the parameters, what the meaningful measurements are, and the test controls/conditions/etc..


It may be your only purpose in life is to serve as a warning for others.
Doss is offline  
post #3 of 8 Old 11-27-2012, 03:41 AM
Compression Ignition Addict
 
blackcloud2k's Avatar
 
Join Date: Nov 2009
Location: Fort Collins, CO
Posts: 2,107
Thanks: 2
Thanked 8 Times in 8 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Send a message via AIM to blackcloud2k Send a message via Yahoo to blackcloud2k
I run royal purple in my diffs. Has friction modifier in it, and then I add just a tad more. Its a little pricey, but I have ran it in all of my trucks and jeeps over the years and have never had a failure.

2015 F350 Ruby Red Platinum, SRW CCLB, Color matched Ranchhands, rigids.


SOLD:
blackcloud2k is offline  
post #4 of 8 Old 11-27-2012, 05:07 AM
Powerstroke.org Fanatic
 
Join Date: Apr 2011
Posts: 122
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
Feedback Score: 0 reviews
I got the Amsoil that they recommended and their friction modifier. Not sure why but my fluid is getting REALLY DIRTY every 30-35k.
713Diesel is offline  
post #5 of 8 Old 11-27-2012, 03:16 PM Thread Starter
Member
 
Join Date: Aug 2012
Location: Winder
Posts: 70
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Quote:
Originally Posted by Doss View Post
That's nice and everything, but are you still under warranty? If you are, I'd run what Ford says to.

I'm running Mobil 1 syn in whatever weight the manual said to run.

Also, with a lot of things, any time someone did a test "years ago" on the current state of tech in a moving field, I throw that out the window (usually) if I'm applying it to today's tech. Another thing, if no one else did testing to support it (or even against it really), I'd be a little suspicious. That's my nature as an engineer and scientist. I'd have to know all the parameters, what the meaningful measurements are, and the test controls/conditions/etc..
Years ago doesn't mean 30 years really. Synthetic diff fluid and normal diff fluid hasn't changed over the years. The concept of how an axle works hasn't changed over the years either. Currie Enterprise is not a company I would argue with. If you know little about them they build and design axles, third members, suspension items, and on. The owner helps design things, and uses his own stuff to win rock crawling championships. Wheeling puts a greater shock load to an axle than driving down the road towing anything. The rear axle that comes on the Jeep (d44), so far i have rolled the stock splines, broke a chromoly shaft, and rolled the pinion splines some with only 35's. They an example of shock loading.

They did the test to find out why they were having to warranty axles so much. They found out that synthetic fluid does not pull heat away from the R&P causing failure. Just because Ford puts in the manual doesn't mean it's the best thing to use. For example, I have read where it recommended to use rad fluid other than Fords.
Burner5509 is offline  
post #6 of 8 Old 11-27-2012, 09:15 PM
Compression Ignition Addict
 
Doss's Avatar
 
Join Date: Sep 2012
Location: The 'Sip
Posts: 734
Thanks: 10
Thanked 10 Times in 10 Posts
Mentioned: 3 Post(s)
Quoted: 17 Post(s)
Feedback Score: 0 reviews
I know you weren't talking about a long time ago and I know who Currie is. I used to drag race a lot... they have good stuff and they have good offroad gear as well. I am also one of those that doesn't use Ford Gold (CAT for me).

That being said, I don't know how they conducted their test and how repeatable the results were... that wasn't my point. Going back to the warranty, regardless of what Currie says, if you tear your rear end up running dino when Ford specified syn, that's probably going to be on your dime just like if you run syn in a Currie rear end.

What you do with your truck is up to you.


It may be your only purpose in life is to serve as a warning for others.
Doss is offline  
post #7 of 8 Old 11-28-2012, 02:22 PM Thread Starter
Member
 
Join Date: Aug 2012
Location: Winder
Posts: 70
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Quote:
Originally Posted by Doss View Post
I know you weren't talking about a long time ago and I know who Currie is. I used to drag race a lot... they have good stuff and they have good offroad gear as well. I am also one of those that doesn't use Ford Gold (CAT for me).

That being said, I don't know how they conducted their test and how repeatable the results were... that wasn't my point. Going back to the warranty, regardless of what Currie says, if you tear your rear end up running dino when Ford specified syn, that's probably going to be on your dime just like if you run syn in a Currie rear end.

What you do with your truck is up to you.
Ok, I was making sure we are on the same page. Since both axles hold a decent bit I would rather use non synthetic due to the cost factor and the heat issue. I have the warranty until February (factory), but does that cover the axles at all?
Burner5509 is offline  
post #8 of 8 Old 11-28-2012, 02:57 PM
Compression Ignition Addict
 
Doss's Avatar
 
Join Date: Sep 2012
Location: The 'Sip
Posts: 734
Thanks: 10
Thanked 10 Times in 10 Posts
Mentioned: 3 Post(s)
Quoted: 17 Post(s)
Feedback Score: 0 reviews
3 yr/ 36k does and the 5 yr / 100k does (at least I'm pretty sure the 5 yr does).

I haven't heard of too many issues with the axles in the 6.4 going bad even with synthetic. That's just something to consider.


It may be your only purpose in life is to serve as a warning for others.
Doss is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome