How To Change Your Duramax Front & Rear Differential Gear Oil!

Today we are doing a Front & Rear differential gear lube change on the 2007 LBZ "Paper Weight" duramax! We are using AMSOIL 75W-90 (Linked Below)
AMSOIL Severe Gear® Synthetic Extreme Pressure (EP) Gear Lube is a premium-grade gear oil specifically engineered for maximum performance in severe duty applications.
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The "Paper Weight" Duramax Mods:
EFI Live Single Stage Tune
Basic WC Fab EGR Delete W/ Block off Plate
64mm LDS Turbo
LDS PCV Reroute
DMAXSTORE MAX FLOW Trans Lines
2" McGaughys Drop Shackles
Bilstein 4600 Shocks
Blue Top Steering Gear Box
Kryptonite Death Grip Pitman Arm
DMAX Store XD Tie Rods
DMAX Store XD Wheel Bearing/ Hubs
Kryptonite Bump Stops
Kryptonite Sway Bar End Links
Tyger T1 Tonneau Cover
Curt Class 5 Receiver Hitch
Ebay Tail Lights
Recon 3rd Break Light

[@alfredomartinez2615]

Yes always change the front diff if doing the rear. I also run solvent to clean all parts before refilling.

[@DIYDiesel]

That’s a very good idea! I should have thought about that when we did this. Especially with that front one 😳

[@White_betty01]

I'm from Alabama I got a lb7 from Oklahoma so ar rebuilding my t-case and the oil don't look like it been changed so I'm just gonna put all new fluids and filters

[@clydeespinosa6286]

Thanks I was wondering what kind of motor oil you use in your d max

[@DIYDiesel]

🤘🏼

[@RobertWorthington]

Dump the front diff oil next month and replace those leaking axle seals. Yikes!!! Loved the video as always 👍

[@DIYDiesel]

Thank you! Ya I think we will be changing it again sooner.

[@SG-bb8pq]

​@@DIYDiesel I know this is a little old. But how did that 2nd change look like?

[@madmarorr]

Is it not 3.17 quarts for rear and just over 2 for the front ?

[@DIYDiesel]

It was about 2 in the front yes the rear was more than I thought it was going to be

[@thatoaklandfan_6.621]

Actually had the Dmaxstore do this for me at 156k miles. I had reviewed the car fax and didn’t see that it had been done. Thankfully there was nothing wrong with it. How many miles does that have on it?

[@DIYDiesel]

That’s good this one has just over 300,000 miles on it 👍

[@ramosar9423]

Can I put 4 quarts in the back instead of 4.2 quarts?? It is a big deal?

[@DIYDiesel]

Not really that big of a deal no

[@hectorpena7635]

Do you recommend using any additives when you fill?

[@DIYDiesel]

Ya can, but using what I use in the video avoids having to add any additional additives

[@hectorpena7635]

@@DIYDiesel sweet, 75-90 for the front as well?

[@DIYDiesel]

@@hectorpena7635 correct 👍

[@ramosar9423]

Hi, how much of this fluid I have to buy for a 2008 Silverado 6.6L Duramax LMM??

[@DIYDiesel]

It should be the same amount 👍

[@ronaldbabbitt6318]

Great video! Definitely worth the time and effort to change all oils, engine transfer case differentials transmission. Well done Brother D! 👏 Lmm in Colorado 🤠

[@DIYDiesel]

Absolutely! It’s very important 🙌 Thank you!