2004 Impreza 5MT drain plug torque ?

P

Paul Pedersen

Does anyone know what the torque value is for the
transmission oil drain plug on a Canadian Impreza RS ?

The 2004 apparently has a new plug, a huge magnetic
plug that has a Torx T-70 female head (cost me 70+$CDN
for a 16mm T-70 hex bit since all the cheap tool stores
stop at T-60).

The 2004 manual I downloaded makes no mention of
this plug (it shows a regular hex bolt head that I
believe used to be the same size as the engine
oil drain plug) and the nearby dealer didn't know
that the plug had changed either since he told me
that the oil and the transmission were the same
and he sold me a gasket the same size as the oil
plug.

The 2004 transmission plug is a lot bigger than
the oil plug and uses a solid copper? washer that
is maybe a bit under 1/8" thick, that I had to
re-use (which may be as intended given the size
of the washer). Manual says to replace it.

I torqued it to 51 ft-lbs ("Periodic Maintenance
Services" manual says 51.6, "Transmission/5MT" manual
says 50.6) but it seemed kind of light for such
a big plug. It was certainly torqued more than
that from the factory.

Anybody know the proper value ?

Thanks.
 

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