What type of transmission oil do you recommend?

[knwebs]

Time to replace the fluids in my baby (1998 Sundancer 540) what type of transmission oil do you recommend and can you buy it online? I have the 3196 engines if it matters. On my 2000 480 sedan bridge I used Rubia SAE 30 and thought I'd ping the minds of the forum to see if there's other oils that people use instead cause it's a pain for me to get the Rubia..

thanks for your time...

 

[docofthebay]

My recommended transmission fluid was Rotella 30wt
Easy to find and only $14-18 a gallon.

 

[Bt Doctur]

http://www.twindisc.com/Downloads/Manuals/Operators_Manual.pdf 2-3