H9 Axle Code - Ford F150 Forum - Community of Ford Truck Fans



H9 Axle Code

Reply
 
 
 
Thread Tools Search this Thread
Old 07-23-2009, 03:00 PM   #1
Senior Member
5 Year Member
Thread Starter
 
dloudy's Avatar
 
Join Date: Sep 2007
Location: Bluff City, Tennessee...near Bristol
Posts: 180
Thanks: 0
Thanked 0 Times in 0 Posts
Default H9 Axle Code

My I.D. label on the driver's door indicates an axle code of H9 for my truck. Couple of questions....

1. What size does this mean I have, or can you tell me where I can look to find out?
2. Does this code mean I have the trak-lock axle?

Thanks for the help....am planning to change out the differential fluid and wanted to know this before I proceed. Additionally, when I buy differential fluid....I know I have to buy synthetic. Is the XL-3 modifier neccessary, or do certain brands / types of fluid suffice without adding the modifier?

Thanks!!
dloudy is offline   Reply With Quote
Old 07-23-2009, 03:09 PM   #2
RejectedReject
 
Join Date: Jun 2009
Location: LITH IL
Posts: 695
Thanks: 0
Thanked 12 Times in 5 Posts
Default

I'm pretty sure the H9=3.55ls. Since you have the limited slip rearend than yes the friction modifier is necessary.
Ftruck05 is offline   Reply With Quote
Old 07-23-2009, 03:20 PM   #3
Senior Member
 
Keeblerz28's Avatar
 
Join Date: Jul 2009
Location: Iowa
Posts: 448
Thanks: 0
Thanked 2 Times in 2 Posts
Default

Quote:
Originally Posted by dloudy View Post
My I.D. label on the driver's door indicates an axle code of H9 for my truck. Couple of questions....

1. What size does this mean I have, or can you tell me where I can look to find out?
2. Does this code mean I have the trak-lock axle?

Thanks for the help....am planning to change out the differential fluid and wanted to know this before I proceed. Additionally, when I buy differential fluid....I know I have to buy synthetic. Is the XL-3 modifier neccessary, or do certain brands / types of fluid suffice without adding the modifier?

Thanks!!
H9 means you have a 3.55LS. Limited slip is the same as Traction lok, so yes you will need XL3 additive. I don't know if other brands of oil already contain an equivalent. For type of oil, check out page 293 in your owners manual.

Other forums:
http://www.ford-trucks.com/forums/86...ier-in-it.html

Last edited by Keeblerz28; 07-23-2009 at 03:40 PM.
Keeblerz28 is offline   Reply With Quote
Old 07-23-2009, 03:34 PM   #4
Senior Member
5 Year Member
Thread Starter
 
dloudy's Avatar
 
Join Date: Sep 2007
Location: Bluff City, Tennessee...near Bristol
Posts: 180
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thanks guys.

I counted 12 bolts in it, so that would be equal to a 9.75", right?

Do you know of a substitute for the XL-3, instead of buying Motorcraft? Would a Redline or Amzoil synthetic require it's use as well?

Thanks again...!!
dloudy is offline   Reply With Quote
Old 07-23-2009, 03:38 PM   #5
Senior Member
5 Year Member
 
Join Date: Oct 2008
Location: Auburndale Fl
Posts: 506
Thanked 2 Times in 2 Posts
Default

i had a jeep rubicon with lockers/limited slip rear that required either dino oil plus additive or if using synthetic it didnt require the additive. I would speak with a ford tech about this. im 99% sure you dont need the additive with synthetic. i guess it probly couldnt hurt the syn oil but its worth asking not to waste money
Rubicon35 is offline   Reply With Quote
Old 07-23-2009, 03:49 PM   #6
Senior Member
 
Keeblerz28's Avatar
 
Join Date: Jul 2009
Location: Iowa
Posts: 448
Thanks: 0
Thanked 2 Times in 2 Posts
Default

Quote:
Originally Posted by Rubicon35 View Post
i had a jeep rubicon with lockers/limited slip rear that required either dino oil plus additive or if using synthetic it didnt require the additive. I would speak with a ford tech about this. im 99% sure you dont need the additive with synthetic. i guess it probly couldnt hurt the syn oil but its worth asking not to waste money
The owners manual specifies [motorcraft] synthetic oil + friction modifier if LS. Other brands sometimes include the modifiers already.
Keeblerz28 is offline   Reply With Quote
Old 07-23-2009, 06:21 PM   #7
Senior Member
5 Year Member
 
jbhill's Avatar
 
Join Date: Mar 2009
Location: Newnan,GA
Posts: 1,180
Thanked 22 Times in 9 Posts
Default

ford racing modifyer is better then motorcraft.

Last edited by jbhill; 07-23-2009 at 06:28 PM.
jbhill is offline   Reply With Quote
Old 08-02-2009, 10:19 PM   #8
Senior Member
5 Year Member
Thread Starter
 
dloudy's Avatar
 
Join Date: Sep 2007
Location: Bluff City, Tennessee...near Bristol
Posts: 180
Thanks: 0
Thanked 0 Times in 0 Posts
Default

So more than likely, my truck would have the 9.75 inch rear end?
dloudy is offline   Reply With Quote
Old 08-03-2009, 01:34 AM   #9
Senior Member
5 Year Member
 
midwestoffroad's Avatar
 
Join Date: May 2009
Location: MN
Posts: 259
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by dloudy View Post
Thanks guys.

I counted 12 bolts in it, so that would be equal to a 9.75", right?

Do you know of a substitute for the XL-3, instead of buying Motorcraft? Would a Redline or Amzoil synthetic require it's use as well?

Thanks again...!!
if you use amsoil or redline you shouldnt need friction modifier "unless you experience chatter" but 99 percent dont.
midwestoffroad is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
'91 4.9l electrical, IAC, computer? jereman Electrical 12 09-29-2015 10:20 AM
2002 F150 5.4 misfire end engine too lean codes cookj Maintenance Shop 3 09-21-2015 11:56 AM
P0156 and P0158 ScrewThat 1997 - 2003 Ford F150 1 09-20-2015 05:04 PM
Chormoly axle shaft?? 96f150351w Drivetrain 2 09-17-2015 09:16 PM
need some axle help please dixiemudder04 2004 - 2008 Ford F150 3 09-09-2015 10:07 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:17 PM.


Copyright 2006 - 2016 F150Forum.com