Pre-1997 Models

tranny / xfer case fluids?

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Old Nov 8, 2003 | 12:32 AM
  #1  
selle's Avatar
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From: Colorado
tranny / xfer case fluids?

Howdy,

Sold my '01 V10 F250 earlier this year to quench my desire to get something faster so ended up with a G35 coupe, but have decided it's not the best choice for a winter car. Being 280HP with RWD and only a couple inches of clearance... must have been a mid-life thing!

So am a pickup owner again after getting a used and somewhat tired 91 F-150 4x4 for inclimate weather duties.

Overall considering the mileage (160k) with no major body damage, has a small 4" lift, starts first time, shifts pretty good, engages 4wheel drive and steers fairly straight with just a hint of slop it ought to do the job quite nicely.

Do have a couple of things to work out on the truck. Looks like the heater core needs replacing. Gotta love that antifreeze window treatment on a cold windshield...

Am going to try to fix that tomorrow. Did that before on a car I owned sometime ago ('64 Ford Falcon 2 door 265 v8 eventually replaced with a 302) and was not too hard to swap. Did see a post on that in the archives here and it sounded like a very similar process.

The next thing that needs work is isolating a small leak coming from near the front of the tranny on the driver's side and the fresh fluid trail would make it seem like the backup light area.

Until I can get that isolated, what the heck do they use for lubricant in this transmission/xfer case? I would have expected it to be something like 80w, but when I went to Chiltons website, it said ATF -- that's new to me in a manual... is this correct?

The engine is a 351 V8 with a 5 speed (4 with an OD), so do these really take ATF? If so, guess I learning something new.

Sorry for such a newbie type of question, but this caught me by surprise.

Thanks.
 
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Old Nov 8, 2003 | 06:05 PM
  #2  
FORD302GUY's Avatar
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From: Smithton MO
Yes it does take ATF.
As a general rule: Aluminum case = atf
Cast iron case = gear oil
 
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Old Nov 8, 2003 | 10:17 PM
  #3  
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From: Wilder, ID
you should notice a difference when you change it, I did, I also used synthetic oil.
 
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Old Nov 9, 2003 | 08:55 AM
  #4  
selle's Avatar
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From: Colorado
Thanks for the replies and useful tips Ford302guy & Dave186.

Just picked the truck up on Friday afternoon. My parking area is not very level so have not opened up the transmission hole yet, but that is where the oil is dripping from.

So since it's atf, my leak must be from somewhere else as it sure looks and smells like oil instead of atf. So maybe a rear main seal of some other obscure point is leaking.

I'll check them all today and see which one goes down over time as it's a fairly slow leak.

Did get the heater core got swapped yesterday. Was not much different than replacing the one in the Falcon. Can imagine some cars are a real bit*h as most are so crowded in the dash area any more.

Thanks again.
 
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