C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

4+3 Filter kit and refill

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Old Feb 4, 2006 | 10:58 AM
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Default 4+3 Filter kit and refill

I am going to drop the filter and put in a new one today and when I was reading the paper work it said to put in DEXRON III Is this correct. I mean it is a manual transmission and I need to make sure that I do not add the wrong fluid?

Also is it okay to extract the clutch fluid and just replace or do I need to do something special.

Thanks
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Old Feb 4, 2006 | 12:08 PM
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There are two seperate spots to fill the fluid. The DexIII for OD & the gear oil for the 4 speed.
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Old Feb 4, 2006 | 12:19 PM
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For what its worth, I use....

Mobil 1 Synthetic 75W90 Gear Lube: 4-speed part
Mobil 1 Synthetic ATF: Overdrive part
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Old Feb 4, 2006 | 12:55 PM
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Thanks for the info!
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Old Feb 4, 2006 | 06:33 PM
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Yes you can just suck out the clutch fluid and replace.
I use Valvoline Synpower DOT 3 & DOT4 brake fluid in the clutch
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Old Feb 4, 2006 | 07:04 PM
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Don't buy the filter from the catalogs. Go to any parts store and get a filter for a Ford FMX transmisson. Same one! They came in Fords from the mid 70's in Torinos, Cougars, F150's and some Mustangs. Will cost about $5 to $7 depending on the store.
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Old Feb 4, 2006 | 11:25 PM
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Originally Posted by 88redvert
Yes you can just suck out the clutch fluid and replace.
I use Valvoline Synpower DOT 3 & DOT4 brake fluid in the clutch
You mix the both together?
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Old Feb 5, 2006 | 01:44 AM
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Originally Posted by c4cruiser
Don't buy the filter from the catalogs. Go to any parts store and get a filter for a Ford FMX transmisson. Same one! They came in Fords from the mid 70's in Torinos, Cougars, F150's and some Mustangs. Will cost about $5 to $7 depending on the store.
Good advice for all 4+3 owners.

In May c4cruiser posted that the Ford FMX tranny filter was the same as the one the specialty houses were selling for twice as much. Then CentralCoaster looked up some part numbers and prices which he posted in that same thread.

Carquest # 85926
AC-Delco #: TF184 ($4.50 at Rockauto.com)
Fram #: FT1024 ($9 at Kragen)
Napa #: ATP14717 ($8.50)
Ford #: D0AZ-7A098-A
General Motors #: 12339143
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