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Schaeffer 204SAT and 205A #5081908
04/21/19 04:32 PM
04/21/19 04:32 PM
Joined: Sep 2002
Posts: 2,769
VA
Gebo Offline OP
Gebo  Offline OP

Joined: Sep 2002
Posts: 2,769
VA
Some of my cars call for Toyota T-IV and some Toyota WS.

Schaeffers 205A says it will work in both T-IV and WS transmissions.

Schaeffers 204SAT says it will work in T-IV only. It is "thicker" than the "WS".

Should I just use 205A for simplicity in all my Toyota transmissions or is it better to stick with the
204SAT in the older transmissions that specify T-IV?

I wish I new the actual specs required in all my Lexi and Toyota AT's. I was wondering if Aisin had them somewhere?


'98 LEX LS400 295K
'02 4Runner 235K
'05 Lex LS430 85K
'07 Lex GX470 65K

Schaeffer Oil
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
(Subject to Change as the Wind Blows)
Re: Schaeffer 204SAT and 205A [Re: Gebo] #5081926
04/21/19 04:52 PM
04/21/19 04:52 PM
Joined: Jun 2002
Posts: 20,016
Iowegia - USA
MolaKule Offline
Global Moderator
MolaKule  Offline
Global Moderator

Joined: Jun 2002
Posts: 20,016
Iowegia - USA
Doesn't your owner's manual have a JASO spec for your Aisin?

I would default to #205A if there is no other info.


Science is about objective reality, not consensus.
Re: Schaeffer 204SAT and 205A [Re: Gebo] #5081940
04/21/19 05:24 PM
04/21/19 05:24 PM
Joined: Sep 2002
Posts: 2,769
VA
Gebo Offline OP
Gebo  Offline OP

Joined: Sep 2002
Posts: 2,769
VA
I'll check.


I've been comparing the 40C and 100C specs among:

Maxlife ATF 29 (40C) and 6 (100C)

Mobil 3309 35 (40C) and 7.2 (100C)

Amsoil ATF 38.5 (40C) and 7.5 (100C)

Amsoil ATF (WS) 30.8 (40C) and 6.3 (100C)

Aisin ATF6 33 (40C) and 7 (100C)

Aisin AFT6 FE (WS) 30 (40C) and 6 (100C)

Schaeffer 204SAT 36 (40C) and 7.4 (100C)

Schaeffer 205A (WS) 31 (40C) and 6 (100C)

Toyota T-IV 34 (40C) and 7.3 (100C)

Toyota WS 23 (40C) and 5.5 (100C)

Yeah, I haven't had a lot to do after church today....LOL

Still looking for the non-synthetic Aisins specs.

Last edited by Gebo; 04/21/19 05:33 PM.

'98 LEX LS400 295K
'02 4Runner 235K
'05 Lex LS430 85K
'07 Lex GX470 65K

Schaeffer Oil
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
(Subject to Change as the Wind Blows)
Re: Schaeffer 204SAT and 205A [Re: Gebo] #5082013
04/21/19 06:32 PM
04/21/19 06:32 PM
Joined: Sep 2002
Posts: 2,769
VA
Gebo Offline OP
Gebo  Offline OP

Joined: Sep 2002
Posts: 2,769
VA
Aisin T-IV 34 (40C) and 7.3 (100C)

Aisin WS 23 (40C) and 5.5 (100C)

Done for now.


'98 LEX LS400 295K
'02 4Runner 235K
'05 Lex LS430 85K
'07 Lex GX470 65K

Schaeffer Oil
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
(Subject to Change as the Wind Blows)
Re: Schaeffer 204SAT and 205A [Re: Gebo] #5082226
04/21/19 09:54 PM
04/21/19 09:54 PM
Joined: Dec 2017
Posts: 2,135
US
JLTD Offline
JLTD  Offline

Joined: Dec 2017
Posts: 2,135
US
Agree with the 205A for the later model, that's what I will be using in the 4Runner. Not sure about the earlier model but the 204SAT sounds right (without doing much research)


I use the overseas manual to choose my oil viscosity.

Using AMSOIL

Hers: 2008 Jeep Liberty 147k, SS5w30/Amsoil

His: 2015 4Runner 53k, OE5w30/Wix

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