Front Diff. Fluid for Alfa-Romeo Stelvio Q4

[fast_dave]

Long time lurker, first time post

Vehicle:
2018 Alfa-Romeo Stelvio Q4 (AWD)
280 hp 2.0 liter engine
36,000 Miles

Objective
I'd like to replace the Front Differential Fluid.
The front diff is a FAD (Front Axle Disconnect) type unit.

FACTORY Spec'd Front Diff Fluid:
SAE 75W-80 APL GL-5 synthetic lubricant FPW9.55550-DA10
Quantity Drain/Fill = 0.5 qts

There are (2) Differential Fluids that meet all factory specs:

* Mopar 68339072AA = $77 Quart (w/o tax)
This fluid is ONLY available to me from an A-R Dealership 30 miles round trip away.
Mopar Parts Depts. (i.e. Jeep) won't sell or order this fluid.
You must obtain it from the A-R Pipeline...

* Petronas Tutela Hypoid Gear Oil 75w-80 GL5 = Approximately $50 Quart (w/o Tax & Haz Mat. Shipping) from an online A-R Parts Dealer

Question:

Is there anything special about the Factory Specifications surrounding the Differential Fluid that justify the $60 to $80 a Quart?
"SAE 75W-80 APL GL-5 synthetic lubricant FPW9.55550-DA10"

Seeking Alternatives:

Motuls' fluid picking app on their website indicates that this product will work in my Stelvio Front Differential.

***** It's around $20 - $25 a Quart online i.e. Amazon *****

MOTUL MOTYLGEAR 75W-80​

(API GL-4, API GL-5, MIL-L 2105 D)​

1 Quart / Part # 105782​

Tech Data Sheet: https://azupim01.motul.com/media/motulData/DO/base/MOTYLGEAR_75W-80_en_FR_motul_44900_20210713.pdf

Will the Motul product safely work as they claim?
Or is there something better out there that I'm missing?
Or should I stick with the two choices that meet the factory specs or????
Please advise

 

[edyvw]

Long time lurker, first time post

Vehicle:
2018 Alfa-Romeo Stelvio Q4 (AWD)
280 hp 2.0 liter engine
36,000 Miles

Objective
I'd like to replace the Front Differential Fluid.
The front diff is a FAD (Front Axle Disconnect) type unit.

FACTORY Spec'd Front Diff Fluid:
SAE 75W-80 APL GL-5 synthetic lubricant FPW9.55550-DA10
Quantity Drain/Fill = 0.5 qts

There are (2) Differential Fluids that meet all factory specs:

* Mopar 68339072AA = $77 Quart (w/o tax)
This fluid is ONLY available to me from an A-R Dealership 30 miles round trip away.
Mopar Parts Depts. (i.e. Jeep) won't sell or order this fluid.
You must obtain it from the A-R Pipeline...

* Petronas Tutela Hypoid Gear Oil 75w-80 GL5 = Approximately $50 Quart (w/o Tax & Haz Mat. Shipping) from an online A-R Parts Dealer

Question:

Is there anything special about the Factory Specifications surrounding the Differential Fluid that justify the $60 to $80 a Quart?
"SAE 75W-80 APL GL-5 synthetic lubricant FPW9.55550-DA10"

Seeking Alternatives:

Motuls' fluid picking app on their website indicates that this product will work in my Stelvio Front Differential.

***** It's around $20 - $25 a Quart online i.e. Amazon *****

MOTUL MOTYLGEAR 75W-80​

(API GL-4, API GL-5, MIL-L 2105 D)​

1 Quart / Part # 105782​

Tech Data Sheet: https://azupim01.motul.com/media/motulData/DO/base/MOTYLGEAR_75W-80_en_FR_motul_44900_20210713.pdf

Will the Motul product safely work as they claim?
Or is there something better out there that I'm missing?
Or should I stick with the two choices that meet the factory specs or????
Please advise

Motul won't recommend something that is not designed for the application.
Check Amsoil, too; Redline does not recommend any fluid for the front (they do for the rear).

 

[slacktide_bitog]

You can probably find a 75w80 GL5 online or in some store, but if you can't, I'd have no problem using 75w85 or 75w90

 

[JavierH19]

If motul recommends it then it's likely fine to use and I'd give it a chance. $77 a quart without tax for the mopar swill is madness.

 

[fast_dave]

Thanks guys - I'll let you know how I move forward, once the weather warms up and the driveline maintenance begins