I have a 91 F150 with a 302. It is 2wd. I would like to change the trans fluid and filter. Can someone please tell me the procedure and the amount of new fluid it will need. The trans is a Automatic Overdrive.
Thanks

 

Heres how I do it everything year!

Drop the pan, change filter etc.

Reinstall pan, fill back up to capacity.

Start 'er up and let 'er run for a couple minutes.

Now get a 5 gallon bucket and a piece of rubber hose.

Disconnect the trans feed line from the radiator (or aux cooler) and shove on the rubber line on that and aim the rubber line in the bucket. Tape the line to the lip of the bucket so it doesn't come out while it's flushing.

(to find the feed line, disconnect both lines to the radiator and start the engine for a second, witch ever line squirts out fluid is your feed line.)

Give a couple shots of compressed air through the radiator (or aux. cooler) to send all the old fluid and crap out of that and back to the transmission.


Put a good funnel on the transmission dipstick tube.


Now prepare at least 10 *OPEN* quarts of ATF ready, at easy hand reach.


Fire the engine up, and start pouring the ATF down the dipstick tube, and don't stop! As much fluid will be coming out as you are putting in.


When the fluid coming out and dumping into the bucket looks as nice and clean as the fluid you are dumping in, stop the engine.

Reconnect the feed line to the radiator (or aux. cooler). Make sure BOTH lines are well connected.

Start up engine and check level. Add as needed. Make sure level is correct.

Go for a good drive, when you get back, check level again and your done!



Simple as that! I do it every single year on my motorhome.

It's a good idea to be 2 people doing this, one sitting in the drivers seat of the vehicle waiting for commands by the person doing the work outside, just incase something happens that you need to turn off the engine quickly. You don't want your transmission to run dry.



( don't know how many quarts your tranny takes.)

 

Does that account for the torque converter too?

I would guess yes because it's circulating fluid.

and I really really need to do mine.

They DO say never use that fancy 'backflush' machine procedure
and other than the possibility of 2 different filters? That's all I know.

92 150 e4od

 

Yes it does everything.

I find this way alot easier than turning the engine over with a wrench and finding that silly torque converter drain plug, and for what ever reason might be installed and doesn't seal anymore, then it leaks out as you drive without noticing then you fry your tranny..... That's why I'd rather leave it alone!

 

You do it every year John? is that related with the change of seasons up there?

 

It's on the motorhome. We do ~6-10k miles a summer with it and I flush out the C6 every year as I still don't have an Aux. transmission cooler and i'm sure that C6 gets really hot at times.

I drop the pan for the filter every 2 years though.

 

I have used the described method and it works well but have two people for certain just incase you need to shut it down quickly (or the pail gets knocked over...don't ask). I have also pulled the torque convertor drain plug when it has been just me doing it and that method also works well but it seems to take forever for the convertor to drain. I have not had any issues with a leaking convertor drain but do make sure you check it after a few hundred kilometers just to be sure.