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I was told to remember to fill the front diff when installing 5 speed my tranny but couldn't find where, i was wondering if filling the transmission would just overflow into the front diff, or is there two compartments?

I assume you mean an AT, in which case the two are not connected. The front diff takes ~GL-5, while the transmission takes ATF. If it's an MT, the diff and the gearbox share the same fluid and there is only one dipstick.

perfect thanx

fishbone79 wrote:I assume you mean an AT, in which case the two are not connected. The front diff takes ~GL-5, while the transmission takes ATF. If it's an MT, the diff and the gearbox share the same fluid and there is only one dipstick.

So, if you guys don't mind me also asking...

What is the oil capacity then for the front diff and trans since it is the same compartment in a MT? Use any GL-5 75W-90 Oil?

Thank you!!

I believe it's something like 3.5 L. Do NOT put in 4 L of gear oil. You can use pretty much any gear oil, I picked up my gear oil from the Subie dealer.

asc_up wrote:I believe it's something like 3.5 L. Do NOT put in 4 L of gear oil. You can use pretty much any gear oil, I picked up my gear oil from the Subie dealer.

Thank you very much! I'm guessing the rear diff takes about 1L?

Yeah, filling the rear diff. is rather crude. You basically just drain it, then plug up the drain hole and pump the 'fill' hole with gear oil until it begins to spill out.

asc_up wrote:Yeah, filling the rear diff. is rather crude. You basically just drain it, then plug up the drain hole and pump the 'fill' hole with gear oil until it begins to spill out.

Got you, thank you very much!!