Subaru: ATF Specifications

Check with a parts store if you want to be sure, but Dex 3 is an upgrade of
Dex 2, so perfectly useable in Dex 2 applications.


"Pat Callaghan" <net> wrote in message
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Thanks Ed. That's what I did & they said fine.

Pat

"ed" <com> wrote in message
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"Pat Callaghan" <net> wrote in message
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Just a clarification here. You _didn't_ say that an upgrade of a
previous specification means it is an acceptable substitute, but some might
still infer that from your wording, so I thought I might add a bit. I cannot
speak to the transmission fluid concern, but in another fluid, brake fluid
specifically, the upgrade to DOT 5 from DOT 4 involved a totally different
base substance (5 is silicone-based, previous were glycol-based, and 5.1 is
glycol based again), and in some cases this is NOT acceptable to an earlier
spec vehicle or brake system.
I'm no expert in this area, and others may correct me or add
understanding here. I only found out about this because the disc brakes on
my mountain bike use DOT 3, DOT 4, _OR_ DOT 5.1, but NOT DOT 5 because the
silicone base will not absorb and thus suspend (dispel?) water. If water is
not absorbed and suspended, it can lead to localized rust more quickly,
particularly in low areas. Collected water can also cause boiling in the
calipers in heavy braking, leading to pedal fade.
A link to a short article on this is found at
http://batauto.com//articles/brkfld.shtml
I apologize if this rather off-thread-topic was discussed here already.
I can't remember if I got my info via this group or my biking newsgroup. So
much for upgrades of specifications.
--
Off to ride the mountains, D H
Reply to newsgroup. Spam is out of control.

"Pat Callaghan" <net> wrote in message
news:com...
 

Just a clarification here. You _didn't_ say that an upgrade of a
previous specification means it is an acceptable substitute, but some might
still infer that from your wording, so I thought I might add a bit. I cannot
speak to the transmission fluid concern, but in another fluid, brake fluid
specifically, the upgrade to DOT 5 from DOT 4 involved a totally different
base substance (5 is silicone-based, previous were glycol-based, and 5.1 is
glycol based again), and in some cases this is NOT acceptable to an earlier
spec vehicle or brake system.
I'm no expert in this area, and others may correct me or add
understanding here. I only found out about this because the disc brakes on
my mountain bike use DOT 3, DOT 4, _OR_ DOT 5.1, but NOT DOT 5 because the
silicone base will not absorb and thus suspend (dispel?) water. If water is
not absorbed and suspended, it can lead to localized rust more quickly,
particularly in low areas. Collected water can also cause boiling in the
calipers in heavy braking, leading to pedal fade.
A link to a short article on this is found at
http://batauto.com//articles/brkfld.shtml
I apologize if this rather off-thread-topic was discussed here already.
I can't remember if I got my info via this group or my biking newsgroup. So
much for upgrades of specifications.
--
Off to ride the mountains, D H
Reply to newsgroup. Spam is out of control.