fla-gypsy
North Florida
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Joined: 04/19/2005
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I just follow what the maker says to do and I have no issues. It is really that simple
09 SuperDuty Crew Cab 6.8L/4.10(The Black Pearl)
06 Keystone Hornet 29 RLS/(The Cracker Cabana)
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kaydeejay
SE Michigan, USA
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Joined: 07/26/2004
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This is not a black & white issue!
Will your axle fail if you DON'T wait 500 miles - probably not!
Will your axle never quit if you follow the instructions - no guarantees!
It really comes down to tipping the odds in your favor (plus of course looking the dealer service tech in the eye and saying "Yes I did follow the instructions if you ever have a problem during warranty).
Keith J.
1999 Sunnybrook 27RKFS Fiver.
2005 GMC Sierra 2500HD CC/SB/DA 2WD, LBZ air cleaner, 52 gal Titan tank, Bilsteins, Line-X, Westin steps, Prodigy, Retrax cover, 16K Superglide, 5th-Airborne pin-box, Multi-vex mirrors, TST TPMS.
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Paul Clancy
BC Canada
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Joined: 09/16/2005
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I waited the 500. Last thing I want is a howling diff.
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RVUSA
Orlando, FL, USA
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Joined: 01/04/2005
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You could have a Detroit true trac differential installed and tow immediately. It's all about the clutches used for limited slip, or not having any in the true tracs case that says whether you need to put some miles on the rear end or not. Ring and pinions use heat treated steel.
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Lessmore
Canada
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Joined: 03/08/2011
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RVUSA wrote:You could have a Detroit true trac differential installed and tow immediately. It's all about the clutches used for limited slip, or not having any in the true tracs case that says whether you need to put some miles on the rear end or not. Ring and pinions use heat treated steel.
My understanding is different. That it is about the gears needing to break in together, no matter the type or manufacture of the traction aid.
I noticed in my old GM truck manual that break in was required, whether or not the vehicle had the locking differential (in this case the Eaton G-80) or not.
A buddy had a Detroit True Trac installed April, 2011....the differential gear shop, told him to do a 500 mile break in, with the differential.
* This post was
edited 02/29/12 09:21am by Lessmore *
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kaydeejay
SE Michigan, USA
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Joined: 07/26/2004
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RVUSA wrote:You could have a Detroit true trac differential installed and tow immediately. It's all about the clutches used for limited slip, or not having any in the true tracs case that says whether you need to put some miles on the rear end or not. Ring and pinions use heat treated steel. Sorry, going to disagree. ALL pinions and ring gear need to be treated carefully to start with. Locking diff or otherwise does not matter.
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RAS43
Littleton,CO
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Joined: 03/23/2006
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NewsW wrote:What harm is done waiting to 1,000 miles.
Try it this way.
Dump the oil and filter at 250 miles.
Then again at 500
Next 1,000
Before you tow, replace the rear diff oil.
Replace the transmission's outside filter at same time.
You will not be disappointed.
No, but you will take a big hit in the wallet for all of that unecessary oil changing. As others have said, follow the maintenance schedule and you "won't be disappointed".
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t?m
Ohio
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Joined: 12/31/2011
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I called the dealer. They said nothing special needs to be done other than wait 500 miles before towing. I asked about the rear diff oil and he said it was not on the maintenance schedule. I couldn't find it in the book myself. He said that it isn't a bad idea to change it every 50,000 or so miles.
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scottew71
Oregon OH
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Joined: 01/29/2012
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My 2012 F150 FX4 manual says no towing or cruise for the first 1,000 miles. The maintenance schedule also says no differential service for 150k for the front and the rear is lubed for life no maintenance required. That is on page 457 of the owners manual i downloaded.
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