How to change diff fluid! (2004 LLY Duramax, FRONT & REAR)
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- Опубліковано 21 сер 2024
- You should change your differential fluid around every 30,000 - 70,000 miles depending on conditions. This was the first time I’ve changed it on my 2004 LLY Duramax, with 74K miles.
I lucked out and had drain plugs on both differentials, otherwise I’d have to remove the diff covers which can add time and cost.
Front Diff: Conventional 80w-90
Rear Diff: Synthetic 75-90
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Differential Fluid, Diff Fluid, Fluid Change, AAM 1150, 11.5” rear end, dodge
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what torque did you use for the drain and fill plugs
Make sure for anyone else doing this that you use a limited slip additive. Or you get the correct 75w90 synthetic with the GL5 additive in it. These rear axles need the additive.
Good to know! Thanks for watching!
What about the front?
I will now have to verify in my owners manual for my 1999 2500 6.0 if it specified for limited slip additive, this now concerns me.
Amsoil is good!
I agree!
Thanks dude.
Thanks for watching!
helpful video - thanks. Have you considered the banks diff cover for the rear?
I certainly have but just can't justify the expense right now! Thanks for watching!
I tought it didnt have a drain plug on the rear diff? I have a 2008 suburban 1500
I think only on the AM1150 axles unfortunately!
My 2005 lly has a drain plug
Didint find it till i pulled the cover off and drained the oil
Nice...
Thanks!
So if nothing comes out of the fill hole when you remove it, you need to add fluid? I have a bad axel seal and am wondering how to check the level.
I'm no expert but I think the fluid should be about level with the fill hole! Thanks for watching!
I have a 08 lmm, would I be over due for replacing diff oil? 126,xxx miles
If that’s the original diff fluid then you’re maybe a little overdue but nothing to worry about!
If you’ve been towing heavy you’re double overdue
I think 50k miles is the recommended interval
SHOULDNT THE FRONT BE A SYNTHETIC?
The owners manual doesn't say it needs to be but probably can't hurt! I just couldn't find the right weight in synthetic for the front that time. Thanks for watching!