C-6 Fluid Change

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Jan 23, 2007 | 09:18 PM

mudslingur

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From: The Casa

C-6 Fluid Change

I am going to change the filter and the fluid in my 77's C-6 transmission.My truck is a 150 4x4,tomorrow I am going to get the fluid and the filter from autozone but I don't know how much ATF i need.Since the fluid is old I am planning to drain the torque converter too.Also when i drain my torque converter is it going to fill back up with the trans,or will I have to take it off to fill it.Also is that crossmember hard to remove, looks straight forward but if it is Id rather be expecting it.

Jan 24, 2007 | 10:39 AM

1975Ford

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Buy a case of transmission fluid.
Then refill when before the start of the engine. Make sure to keep the transmission full of sufficient trans fluid during refill phase.

Turn off engine, remove transmission return line at radiator. Refill transmission to full line on transmission dip stick. Have fluid drain into drain pan while keep transmission in full line, till transmission fluid draining is clean fluid. Reconnect and refill.

Jan 24, 2007 | 07:52 PM

clunker86

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i know the troque converter holds a gallon. and the tranny i believe holds 6 quarts. you can drain the traq converter by the drain plug and the tranny when removing the pain to put the new filter on.

Jan 24, 2007 | 08:05 PM

clunker86

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oh and you are going to want to use the ATF fluid on this c6. do not use dextron on it. they did not switch this until 1981 and up

Jan 25, 2007 | 02:25 PM

rclarke

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The change to dexron transmission fluid happened in May 1976 transmission build date. All C6 in model year 1977 and newer use dexron. A C6 uses 12-13 qts of fluid if fully drained.

Jan 25, 2007 | 03:17 PM

1975Ford

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I agree, C6 Transmission fluid - 1976 Type F; 1977-86 Dexron II.

Purchase a good brand of Transmission Fluid.

Jan 27, 2007 | 03:35 PM

txlegman

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What happens if you use ATF in a C6 (1978)?

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Feb 22, 2007 | 07:45 AM

danlee

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From: Delaware

I had a C6 rebuilt in 1998. I recently drained it to do a motor job. Can I use Dexron III/Mercon or Mercon V instead of Type F wihich is getting harder to find.