DIY: Automatic Transmission Fluid Change

[garrettjones331]

Just curious about the addition of the 2.1 qt of fluid. From reading through the brz manual on the first page it seems like you should be adding more than 2.1 qts each fill/drain. It seems like it's visualized pretty well in the 2nd step of the "C: ADJUSTMENT" Diagram on page PM-70


8) Add fluid through the refill hole until the fluid flows out of the overflow tube.[*6]
9) Wait until the fluid stops flowing and is only dripping.[*7]
10) Temporarily tighten the overflow plug using a 5-mm (0.2 in) socket hexagon wrench and a new gasket.[*8]
11) Add fluid through the refill hole until reaching the specified amount when removing/installing the oil
pan.[*9]



Filling amount (reference):
2.0 L (2.1 US qt, 1.8 Imp qt)




The 2013 FRS manual seems to be a little less ambiguous with the description


(f) Add fluid to the refill hole until it flows out of the overflow
tube. [*5]
(g) Wait until the fluid flow slows and only drops come out. [*6]
(h) Temporarily install the overflow plug and gasket. [*7]
(i) Add fluid to the refill hole using the amount of fluid specified for removal and installation of the oil
pan. [*8]
HINT:
Specified amount of fluid is 2.0 liters (2.1 US qts, 1.8 Imp. qts).

[dodj]

So I took the overflow bolt out and about 1/2 litre of ATF comes out. Wasn't expecting that.
Drivetrain cold. Hadn't run since the day before.
Normal? Or just overfilled from the factory.

Unless, the hotter it gets...the less oil is in the pan?

[dodj]

Ok. The difference between 71*- ambient... and 108* is about 4 table spoons of fluid.
So....really, getting the correct temp range...really doesn't matter.
Just FYI

[NORCAL50]

Originally Posted by garrettjones331

Just curious about the addition of the 2.1 qt of fluid. From reading through the brz manual on the first page it seems like you should be adding more than 2.1 qts each fill/drain. It seems like it's visualized pretty well in the 2nd step of the "C: ADJUSTMENT" Diagram on page PM-70


8) Add fluid through the refill hole until the fluid flows out of the overflow tube.[*6]
9) Wait until the fluid stops flowing and is only dripping.[*7]
10) Temporarily tighten the overflow plug using a 5-mm (0.2 in) socket hexagon wrench and a new gasket.[*8]
11) Add fluid through the refill hole until reaching the specified amount when removing/installing the oil
pan.[*9]



Filling amount (reference):
2.0 L (2.1 US qt, 1.8 Imp qt)




The 2013 FRS manual seems to be a little less ambiguous with the description


(f) Add fluid to the refill hole until it flows out of the overflow
tube. [*5]
(g) Wait until the fluid flow slows and only drops come out. [*6]
(h) Temporarily install the overflow plug and gasket. [*7]
(i) Add fluid to the refill hole using the amount of fluid specified for removal and installation of the oil
pan. [*8]
HINT:
Specified amount of fluid is 2.0 liters (2.1 US qts, 1.8 Imp. qts).

Thank you, I literally signed up to say this; but you beat me to it. I think I'll be measuring how much comes out and if it's more than 2.1qt, I'll go with the service manual's instructions. Worse case, it'll come out of the overflow.

[Daily86]

I don't know if this helps. Read the manual section that talks about fluid Adjustment.

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