Front differential fluid???

[Buckdown16]

Hello, I am new here, and my 2024 Crosstrek Wilderness has about 15K miles now. So, I am starting to change all my fluids after break-in. Any thoughts on what to use on the Front Differential? Owners manual states use either 75W-80 Subaru Extra MT fluid, or 75W-90 GL-5 rated gear oil. Subaru Extra MT is impossible to find under 5 gallons, so I am going the aftermarket route. What do you use? I was thinking Amsoil 75W-85/75W-90 gear oil, but wanted to know from experienced Subaru owners before I proceed.

 

[bmart]

They're on 15k cycles? That seems REALLY short.

 

[Dick Foster]

w

Hello, I am new here, and my 2024 Crosstrek Wilderness has about 15K miles now. So, I am starting to change all my fluids after break-in. Any thoughts on what to use on the Front Differential? Owners manual states use either 75W-80 Subaru Extra MT fluid, or 75W-90 GL-5 rated gear oil. Subaru Extra MT is impossible to find under 5 gallons, so I am going the aftermarket route. What do you use? I was thinking Amsoil 75W-85/75W-90 gear oil, but wanted to know from experienced Subaru owners before I proceed.

Whatever you use make it a full synthetic oil.
Suburu does not make oil, it just has their label along with a very large price mark up.

 

[Buckdown16]

w

Whatever you use make it a full synthetic oil.
Suburu does not make oil, it just has their label along with a very large price mark up.

That's what I was thinking. I'm probably going to go with Amsoil Severe Gear 75W-85 most likely.

 

[Dick Foster]

I think severe gear is a Red Line oil unless Amsoil has started stealing product names now.

 

[Buckdown16]

I think severe gear is a Red Line oil unless Amsoil has started stealing product names now.

Negative. Redline has no name for their gear oil. It is what Amsoil calls theirs.

 

[Buckdown16]

They're on 15k cycles? That seems REALLY short.

Ya, but according to their manual, that's what you do for severe service. Which is about 90%+ of drivers on the road in the US. I won't be doing it every 15K, just doing it to get the OEM fluid out. After this, I'll do the diffs every 50K with good fluid.