I want to change the fluid in my Jeep Renegade (ZF 9 speed). Of course there's no dip stick so my plan was to see how much came out then add that much. Then I found instructions to do it correctly. There's a dipstick to buy and I would need to know the transmission temp to check it. Is it worth the bother, and if so what scan tool should I get to check. I'm pretty sure my cheepo HF one doesn't do this.
