I have had this rebuilt 4L60E for a year now and have put about 15-20k miles on it. 5 months after i got it I installed a yank SS3800 converter with all the goodies (cooler & shift kit). With all of that going on, should I change my tranny fluid? This car is my daily driver too.

 

If the fluid looks & smells ok, leave it alone. You only need to change it when it starts to show signs of "wear" (the looking and or smelling burnt). When this happens, do a "complete" change of the fluid.

 

So, don't change it until it looks like theres damage going on?

 

i change mine every 2 time to the drag strip no problems running 11s on my stock 4l60e

 

I change mine twice a year

 

I change mine every 10,000 miles......So about once a year