If you have a problem - it's too late.  Changing it will remove the
build up of clutch material that might be helping you.   Generally I'd
recommend every 50-60k miles.

Jason

On Tue, Feb 26, 2013 at 11:16 PM, Spencer Allen <spencervw@aol.com> wrote:
> I don't remember for certain but some time (years) ago there was talk about NOT changing the fluid in an auto tranny because it would have a negative effect. Can someone  post the latest word on when or if to change the AT fluid. I have a auto 85 Westy with 86K and I don't think the trans has ever been serviced. Thanks for any info.
> Spencer
>