i change my tranny fluid 40k miles ago. It is time to change it again?

How often u guys change the tranny's fluid\?

 

I use MT90 as well and replace it every two years.

Frequent fluid changes are cheap insurance IMHO.

 

how many miles?

 

since its synthetic i say 60-100k miles...
its recommended to change it every 40-60k if your using stock oil.

every 60k should be fine.
your spending like $60 on gas ever 350miles why not spend about $30 on oil every 60k miles?

 

I always like to change at 30,000 Mile Intervals.

 

Same here. I just changed about a month ago at 30k. Won't change again until about 60k.