Hi I recently got a 2009 Ralliart with 100,000km for a great price but it has a hard shift from first to second my obd scanner gave me the p2809 second shift solenoid stuck I check the trans fluid it black I hear that a flush can fix this problem I’m a broke high school student and I can afford the liquid gold diaqueen sst-1 Amsoil makes a dct fluid that says it work with the sst trans and has a warranty an suggestions

 

AFAIK nothing has changed, and there is still no proven alternative to diaqueen in the U.S.

Your probably gonna need extra too so you can flush out the trans and hope that solves your issue. Don't forget the filter too.

 

Well motul and Amsoil have dct fluids that directly list a replacement as diaqueen I know everyone uses oem but it’s too expensive for me I won’t be pushing the car or anything it’s it gunna be my daily driver

 

dbl post...

 

nobody likes paying too much for drivetrain fluids, we don't do it because we like it. It's a free country though do as you will.

I would highly recommend you do some more research on this topic though before spending any money on fluids.