Front and rear gear oils

Ronald Nadeau · Aug 19, 2019

Has anyone used Sta Lube Gl5 CRC 24239 Multi-Purpose Gear Oil, SAE-Gallon, 128. ... Lucas Oil LUC10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon in there front and rear differential? Getting ready to change the fluid and trying to decide what to use. Do I need to put an non slip additive in there also?

crackerjack1957 · Aug 19, 2019

https://eastcoastgearsupply.com/files/PDF Files/ecgs-gear-oil-recommendation1.pdf

Ronald Nadeau · Aug 19, 2019

Do I need the limited slip additive to go with my oil change? The build sheet does not mention and reference except 6000 lb front axel and no slip rear axel

Ronald Nadeau · Aug 19, 2019

DJNS 6,000# Front Axle
DK3 Elec Shift-On-The-Fly Transfer Case
DMF 4.10 Axle Ratio
DRQS 11.50" Single Wheel Rear Axle
DSA Anti-Spin Differential Rear Axle

R.L.K. · Aug 19, 2019

What year and are you a 1500 , 2500 ...??

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Ronald Nadeau · Aug 19, 2019

2016 2500 hemi 5.7

R.L.K. · Aug 19, 2019

Ronald Nadeau said:
2016 2500 hemi 5.7

Check out this thread from post #1 ....Lots is good info here [emoji1360][emoji1360]

https://r.tapatalk.com/shareLink?ur...&share_tid=84221&share_fid=17770&share_type=t

Differential oil change

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R.L.K. · Aug 19, 2019

There's a few 2500 guys who enter the thread at a few different spots .

Hope this helps [emoji1360]

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crash68 · Aug 19, 2019

Ronald Nadeau said:
Do I need the limited slip additive to go with my oil change?

You don't need the limited slip differential friction modifier for the factory HD LSD, it is a helical-gear type. If the gear lube you decide to use has it, that's fine too.
With the HD truck, you can use a 75W90 gear lube, preferably a full synthetic.
A lot of guys use Redline, PM @Nick@GotExhaust for pricing. Mobil 1 is another good one to use.

Nick@GotExhaust · Aug 20, 2019

Let us know if we can help. Send me a message for a quote

meedom · Aug 20, 2019

crash68 said:
You don't need the limited slip differential friction modifier for the factory HD LSD, it is a helical-gear type. If the gear lube you decide to use has it, that's fine too.
With the HD truck, you can use a 75W90 gear lube, preferably a full synthetic.
A lot of guys use Redline, PM @Nick@GotExhaust for pricing. Mobil 1 is another good one to use.

X2^^^^ Synthetic gear oil and engine oil are better in EVERY way when compared to Dino, just do the research and look at
reviews....

Burla · Aug 20, 2019

There is a ton of paper out there on gear oils, two oils you probably want to avoid are royal purple and lucas. On the other hand two you might want to look at are Amsoil SG and Redline. Many other good otc brands as well, m1 is known to be good torco as well. Lucas is probably the worst gear oil out there from what I have read. Search gear fluid studies.

R.L.K. · Aug 20, 2019

Burla said:
There is a ton of paper out there on gear oils, two oils you probably want to avoid are royal purple and lucas. On the other hand two you might want to look at are Amsoil SG and Redline. Many other good otc brands as well, m1 is known to be good torco as well. Lucas is probably the worst gear oil out there from what I have read. Search gear fluid studies.

Yep Lucas and Royal Purple score WAY DEAD LAST in every gear oil test I've seen [emoji23][emoji23] [emoji23]

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crackerjack1957 · Aug 20, 2019

Lucas synthetic is bad........Lucas dino is good.
All the gear shops I know do not recommend synthetic of any kind during the 500 mile break-in of gears and if used the warranty is void.

Amsoil & Redline synthetic are recommended after break-in if not using Lucus dino.
Just saying Lucas dino performs well, just have to change more often.

tidefan1967 · Aug 21, 2019

Might as well go with Redline since basically all synthetic gear oils are about the same price and you know you're getting the best! I've had great luck with Mobil 1 but no point in using it if Redline is within shouting distance pricewise which it is.

Front and rear gear oils

Ronald Nadeau

Junior Member

crackerjack1957

Senior Member

Ronald Nadeau

Junior Member

Ronald Nadeau

Junior Member

R.L.K.

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Ronald Nadeau

Junior Member

R.L.K.

Senior Member

R.L.K.

Senior Member

crash68

ACME product engineer

Nick@GotExhaust

Senior Member

meedom

Senior Member

Burla

Senior Member

R.L.K.

Senior Member

crackerjack1957

Senior Member

tidefan1967

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