Correct fluid advice |
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Rivercrest
Member Joined: 07-December-2019 Location: Manitoba Canada Status: Offline Points: 175 |
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Posted: 23-May-2020 at 10:11AM |
Hi to all, I just had my C6 transmission / converter over hauled by a local tranny shop who has been in business for 30 years. Tranny had 200,000 miles on it so pretty much all the internals were replaced. As I am doing my own re install, they suggested I should not use type f fluid and upgrade to a newer, non synthetic fluid which they will supply to me for the refill. Currently there is no fluid in place. I can't remember the fluid type but they said it would reduce long term varnish build up and as I have all new seals, bands etc etc this would be the right thing to do. I am not totally convinced and i am looking for other opinions. Thanks ( As a side note I have a new pail of Type F that I was going to use on the reinstallation.)
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albo74
Senior Member Joined: 25-February-2006 Location: ME. USA Status: Offline Points: 616 |
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gee , so the original Type F fluid went 200 thousand miles , and you got some . I would use it . Then again if they want to use their new and improved fluid AND warranty it for 200. thousand I guess you can't get hurt
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albos73gts
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Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6072 |
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Dexron
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72 GT Ute
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72FordGTS
Admin Group GTS.org Admin Joined: 06-September-2005 Location: Ontario, Canada Status: Offline Points: 5846 |
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There are differences in the friction materials of today versus when the transmission was built. What type of rebuild kit did your builder use and what friction materials? I used a Broader kit in my C6 and Broader recommends a name brand Dexron/Mercon 3. He says if one is a "diehard Type F fan" that Type F is okay too and it will not damage modern friction materials. He also says that a Mercon 5 semi-synthetic is good for cold or very hot climates, and that a full synthetic is good for over 2800 RPM stall converters or towing more than 10,000 lbs. However, he indicates a bigger or more coolers are a better solution for high transmission temperatures.
FWIW, I ran Dexron in mine and no issues. Plus its easier to find in the parts stores.
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Vince
1972 Ford GTS Sportsroof - Survivor, One Family car GTS.org Admin |
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Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6072 |
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my trans builder used Dexron in most jobs, along with the correct LubeGard product for units that require a specialty fluid like Mercon V. he swore by the stuff, said it reduced his come-back failure rate significantly. LubeGard Red is the supplement for Dexron |
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72 GT Ute
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stanman
Senior Member Joined: 23-March-2007 Location: Nova Scotia, Ca Status: Offline Points: 1432 |
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I'd use whatever the rebuilder says and use that Type F for undercoating or something.
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