according to the RAVE CD, the transmission takes roughly 10 quarts DRY
. That specification isn't much help because unless you're working with a brand-spanking-new transmission and torque convertor, you're not going to have a dry transmission
I'd say that it'd be pretty close to impossible for anyone to come up with a definitive number for how much fluid a used transmission is going to take...and if someone did manage to work out the numbers, I highly doubt that it would end up being a nice round number like 6.5 quarts.
I recently dropped the pan and replaced the filter on my wife's 2001 Disco. I learned a few important lessons along the way. If you haven't already gotten into the job, maybe what I learned can help you.
-Drain the transmission.
-Break loose the fill plug and keep track of both plugs
The pan is secured using a strange clamp system that I have never seen before. It's pretty straight forward, just make sure you keep the pairs together and know where they go. I took a piece of cardboard and drew the outline of the pan on the cardboard and stuck the bolt and clamp into the board so I didn't screw it up. I'm an idiot though, so you may not need to do this if you can remember stuff for longer than 30 minutes or so.
The filter and the pickup tube are secured using (3) torx bits. I don't know what size so if you don't have them, go buy a few sets...they are nice to have on hand anyways.
Two of the torx bolts are the same and one is different. The different one holds the pickup tube...easy enough, I don't think it'd be possible to screw this up anyhow.
After removing the three torx bolts, the entire unit should drop down. Be prepared for some fluid to come along with it. Not much..just some.
Remove the pickup tube from the filter. Remove the o-ring from the pickup tube. Install new o-ring on the pickup tube and insert onto new filter...ensuring that you're keeping everything as spic-and-span as possible...dirt in the transmission is not a good thing.
Clean the hell out of the pan inside and out (inside more importantly) Clean the gasket mating surfaces, particularly on the pan and on the transmission body. Clean BEYOND where you expect the gasket to touch so if you have to move the pan around a little to get it lined back up, you don't bring a bunch of grease and dirt into the path of the gasket.
-Reinstall filter w/ pickup tube.
-Pump in enough fluid that it wants to leak back out of the hole. My best guess
would say this should be somewhere between 6-7 quarts. Regardless of whether you are using a hand-pump or the hole-fill method, if the hose going into the fill hole is a snug fit, I recommend occasionally removing the hose to ensure it's not holding a bunch of fluid in. This is what happened to me. I left the hose inside the hole and kept pumping and pumping. Eventually enough pressure built up that it blasted the pump hose out of the fill hole and purged about 2 quarts of ATF onto the ground before I could react...so check frequently.
Once you've got some fluid coming back out of the hole, PLUG IT.
Shift through the gears and let the vehicle get up to temperature.
If you've got an adversion to getting burnt, you might want to throw on a long sleeved shirt and some gloves. I didn't, but I was very mindful of where the exhaust was. note: at this point the transmission fluid isn't very hot anyways, so don't be afraid of that, just watch the exhaust
-Pop out the fill plug.
-gradually add more fluid until it again slowly trickles out of the hole.
-Check it for several days following the filter change to ensure the fluid level is up to par.
-Add fluid as necessary.
NEVER EVER NEVER EVER NEVER remove the fill plug when the vehicle is not running and not up to temperature unless you have some sort of sick fetish for wasting ATF and time.
When you go to check the fluid levels again the vehicle needs to be up to temperature and running.
Why? As you may have came to the conclusion on your own, the pan doesn't hold 100% of the fluid, only a fraction of what the entire system uses. Therefore when the vehicle is running, the transmission pump is pumping the fluid throughout the system and whatever capacity the pan holds should be in it. When the vehicle is off and not running, the pan is WAY OVERFILLED because the pump isn't circulating the fluid. I hope this makes sense and is helpful to you.