Re: ATF spec for '08 9-3 Aero XWD Aisin 6-speed tranny - Bulletin Board

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Re: ATF spec for '08 9-3 Aero XWD Aisin 6-speed tranny
Posted by Justin VanAbrahams [Email] (more from Justin VanAbrahams) on Mon, 7 May 2018 13:41:32

In Reply to: ATF spec for '08 9-3 Aero XWD Aisin 6-speed tranny, Tim, Mon, 7 May 2018 09:20:35
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I just did this.

The TF-80SC family includes the AWF21, AF40-6, AM6, AW6A-EL, TF-81SC, AF21. Saab uses the AF40 designation, but they're all basically the same transmission.

There are a million sources for this fluid:

GM part number is 93165147
Ford is Motorcraft XT-8-QAW
Toyota is Type IV

So, you can buy it at any GM, Ford, or Toyota/Lexus dealership.

The official fluid is Aisin-Warner AW1.

Most modern ATFs meet these specs, from Valvoline or Castrol, etc.

Other brands include Ravenol T-WS and Pentosin ATF1-LV.

For whatever it's worth, I used Pentosin ATF1-LV, as it's also the same stuff that went into my Jag w/ Mercedes 5G Tronic transmission so I had it.

You NEED a tool capable of reading ATF temperatures to change the fluid. The transmission must be between 30C and 45C in order to properly check the fluid level via the stand pipe. I've seen people use the transmission surface temp to do this change, but that's really unreliable. FWIW - not that I'd advise this - but it takes about 12 minutes idling in P with the hood up in 70F ambient temps to get the fluid to 32C on my car. I've done three 3L changes now, and that's fairly consistent. Once at temperatures, you need to cycle the gear selector between P/R/D pausing for 2+ seconds in each gear, repeat twice. The car must be level to check the stand pipe.

The little drain plug is T40. The big drain plug is 12mm hex. The fill is T55. Little drain plug is 7 lb ft, big drain plug is 33lb ft. Fill plug is 30lb ft.

I know Saab recommends a 30k change interval on these transmissions now, but i'm thinking I may just do 3L changes at every oil change. It only takes about 15 minutes to do. Unfortunately, doing so does require disconnecting the battery, and that means reprogramming the window anti-pinch each time, but whatever.

posted by 12.195.130...

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