Transmission Fluid change

For this level of service the AOD and 4r70 are identical. Only the gear ratios and controls are different-they use the same rebuild kits even.

Realistically this should only take 2hrs start to finish, with most of the time trying to get all 13qts back in. As for the fluid my research has shown you can use Mercon V in a AOD/E4OD but do not cross contaminate with Mercon-meaing only change during a rebuild.
 
IIRC easiest way to get the torque convertor drain is remove the rubber cap, then use a flat blade screwdriver to push on the flex plate gears and rotate it. That is how I have done it in the past. Saves time crawling in and out from under the car to try and get the drain lined up.
 
Ok so in the interest of being safe and not unbolting the wrong thing, this is the Torque converter drain bolt right? the little one not the silver nut with the flange. Its a dumb question i know but I do NOT want to start taking a bolt out before I know exactly what its for.
Torque Converter drain.jpg
Oh and yeah I know my rear main is leaking, it bugs me too.
 
Well, isn't that interesting! Totally different from the 4r70w. I'm guessing that's what it is, but wait for one of the other guys to confirm.

On 4r70w, the drain plug points straight down.
 
1997ThunderbirdLXV6 said:
I've read that many times, but I just don't see the point when you can easily siphon the fluid in the pan through the dipstick tube.

Hand pump $5; new pan with drain plug $50 (guesstimate). I know which I prefer.

@Jae 'Bird , I also recommend reusing your pan gasket. It's probably better than any aftermarket gasket.
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Hand pump? Like the one from Hobo Fright? Yeah, that will certainly make a man out of you. You can add a drain plug, they have kits that are not that much. Drill the hole, incert the plug... BAM! Next time you go to change the oil it won't be such a friken mess. Never understood why they won't put a drain plug on the tranny pan.

I re-used my pan gasket, but it was the rubber one. Lasted after many many oil changes and no leakes. Cork? Forgetaboutit.
My two cents.
 
1997ThunderbirdLXV6 said:
Ohh, and not sure if anyone mentioned this: if you spill even the tiniest amount of transmission fluid onto your exhaust, it'll cause a huge, dense white cloud of smoke as the fluid evaporates. It's apparently harmless, but it can be scary if you don't know what's going on.
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Hmmmm.... That has never happened to me. Maybe I should try it!
 
Yeah, I don't have an aod. My suggestion would be, pull it and if a few quarts of mercon comes out, that's it. :)
The other one looks like the flexplate bolt I always strip, because it's standard ,lol.
 
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