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Transmission Fluid & Clutch Size

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Old Jul 15, 2022 | 11:03 AM
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Transmission Fluid & Clutch Size

Hello all,

I did spend some time searching for this topic and none of the results seemed to cover it.

I want to replace the transmission fluid in my 1952 F3; it has the 4-speed standard transmission. Napa, Advanced, etc all recommend Type FA ATF. Is that what you guys would recommend / use?

Also, noob question but how do I tell what size clutch I have? Looks like 10" or 11" are the options? I am likely tearing into the clutch and transmission soon and would like to order a replacement clutch kit to have it ready to go.

Thank you!
Wes
 
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Old Jul 15, 2022 | 11:43 AM
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It’s a manual, I don’t think you should use ATF. Typically these need a 90 weight gear oil.
 
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Old Jul 15, 2022 | 11:54 AM
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Originally Posted by Bob Ingram
It’s a manual, I don’t think you should use ATF. Typically these need a 90 weight gear oil.
Agree Bob, that's why I was confused when they all suggest ATF. Usually NAPA is more accurate in my recent experience.
Wes
 
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Old Jul 15, 2022 | 12:53 PM
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I put 90 WT gear oil in mine recently. Definitely wouldn't use ATF.

What engine do you have in the truck?
 
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Old Jul 15, 2022 | 12:57 PM
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If the trans is the 4-sp non-synchro, it would have an 11" clutch.
 
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Old Jul 15, 2022 | 01:47 PM
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I use 140# weight in mine, trans and rear 1948 F3 226h 4 speed
 
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Old Jul 15, 2022 | 03:26 PM
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I use 80-90 gear oil in my T98.
I looked at my manual and it says SAE 90 for 32 degrees and above SAE 80 for below 32 degrees. Now my manual is a 54-55 but it's probably the same. I've heard of people putting 140 in (more than just fordf348)
It does say the Fordomatic needs ATF Type A. Maybe that is where NAPA is confused.
 
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Old Jul 15, 2022 | 07:05 PM
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Originally Posted by ALBUQ F-1
If the trans is the 4-sp non-synchro, it would have an 11" clutch.
Awesome, thanks for the help.
 
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Old Jul 15, 2022 | 07:11 PM
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Originally Posted by ReForder
I put 90 WT gear oil in mine recently. Definitely wouldn't use ATF.

What engine do you have in the truck?
I have the 239CID 3.9L flathead V8. Thanks for input on 90 WT gear oil.
Wes
 
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Old Jul 15, 2022 | 07:13 PM
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Originally Posted by fordf348
I use 140# weight in mine, trans and rear 1948 F3 226h 4 speed
OK, thanks for input.
Wes
 
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Old Jul 15, 2022 | 07:15 PM
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Originally Posted by Harrier
I use 80-90 gear oil in my T98.
I looked at my manual and it says SAE 90 for 32 degrees and above SAE 80 for below 32 degrees. Now my manual is a 54-55 but it's probably the same. I've heard of people putting 140 in (more than just fordf348)
It does say the Fordomatic needs ATF Type A. Maybe that is where NAPA is confused.
Thanks - consensus seems to be the 80 - 90 weight gear oil.
Wes
 
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Old Jul 16, 2022 | 05:17 AM
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Your transmission will shift better with 140, its what is specified in the manual.
 
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Old Jul 16, 2022 | 06:32 AM
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Originally Posted by roadrunner01
Your transmission will shift better with 140, its what is specified in the manual.
OK thanks - I'll check it out. Appreciate it.
Wes
 
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Old Jul 16, 2022 | 06:52 AM
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Our 3 speed transmission calls for 140 weight in warm temperatures and 90 weight in cold temperatures. We run 140 because we are in Texas.
 
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Old Jul 16, 2022 | 07:04 AM
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Originally Posted by Bimmerboy1989
Our 3 speed transmission calls for 140 weight in warm temperatures and 90 weight in cold temperatures. We run 140 because we are in Texas.
OK, great, thanks for info.
Wes
 
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