So I'm about to change my transmission fluid and when I bought the fluid from my local mitsu dealer they sold me Motul fluid, which is significantly cheaper than the Diaqueen fluid. Anyone else have any experience with it? I was under the impression there was only one type of fluid the SST could take.

 

This is the fluid they sold me.

 

I heard someone say that it wasn't as good as Diaqueen but if your dealer sold it and will honor your warranty on your trans when using it then might as well save some $.
I used Ravenol DSG Fluid for 25k and had no issues.
I switched back to Diaqueen though because the cost of Ravenol went up canceling any savings.

 

had this done by the dealer using diaqueen. though it comes in 4Ltr containers they only charged me for what they put in which was around 6.25 or so. $265 for the fluid, and the extra spent was worth the peace of mind knowing its what was and is supposed to be in there

 

You should only use Diaqueen fluid. The dealership is totally incompetent if they are selling you anything else.