[Rivergoer]

Completely different transmission but might want to peruse this thread for the Gen 1 Diesel Aisin transmission, a lot of good things to say about Amsoil.

http://www.cruzetalk.com/forum/169-...ion-fluid-diesel-aw-af-40-6-transmission.html

 

[Rivergoer]

Yes, Amsoil Signature Series Fuel-Efficent Synthetic Automatic Transmission Fluid has reportedly been working great for the diesel Aisin transmission...at least from what I'm reading on the Gen 1 Diesel thread posted by KpaxFAQ.

I ordered 9 qts and planned to follow the 3x fill/replace procedure before temps here in AZ shot up over 120 degrees. Hoping to get it done soon but no real relief in sight. May wait till September/October when it "cools" back down into the 90's LOL.

Hopefully XtremeRevolution can chime in with some input specific to your LTZ trans. Good Luck!

 

[Rivergoer]

What's the difference between the 2 other than the $?

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Not an Amsoil expert but from other threads here I've read the difference between these two is mainly longer interval for the Signature Series.