I believe it is suppose to be lifetime but all fluids eventually break down or just go bad. I bought a syringe that has a short plastic tube on the end of it from an auto parts store and draw out as much fluid as I can. At 48K miles, you will see that the fluid is brown and the new fluid is red. You won't be able to get all the fluid out so that's why I do this every year. The biggest pain of this is to remove the plastic cover over the reservoir since they use one time use fasteners.
So what have you've been doing about the plastic cover on the passenger side that needed to be removed? Keeping it off, reusing the fasteners, using new every time or has anyone modified this to use reusable fasteners?
When I bought the car (pre-used) I left the cover off since I wanted to drain and fill for at least 4x, until I get the pink-red color to the fluid. Boy it was BROWN.
It will be nice to replace the fasteners with something quicker to take off and put on. It is such a hassle. In fact, we can just drop the clip and not even use the plastic bolt. Or get a snap on fastener from Ace Hardware. I will find a replacement and post it here.
I use an oil pump to quickly suck up the tranny oil. But the cleaning of the pump is 4x longer than the actual draining, what a pain. I still want an easier way of sucking up that oil...we shall persevere!
SC430 WGC-Ecru/RX330 Bamboo Pearl-Gray/IS350 Black Onyx-Gray