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  #1  
Old 09-19-2009, 06:31 PM
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Trans fluid opinions?

I need to do a trans service on my pickup and am wondering what fluid is best. I am looking to do a synthetic. Any opinions would be appreciated.
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Old 09-19-2009, 06:43 PM
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Not sure you will find any better than this. PM me for help.

AMSOIL - Synthetic Universal Automatic Transmission Fluid (ATF)
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Old 09-20-2009, 05:51 AM
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I have gone the synthetic route and I saw no improvement or lower temp as they claim, so my advice is don't waste your money and stick with DINO fluids. I also know Hank above and if he says Amsoil is good than I have no reason to doubt him, not trying to take a sale from Hankdaddy!!!
Just remember that only Mercon/Dexron III fluid is approved for the 4r100, no Mercon V!!!


NCH
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Old 09-20-2009, 03:13 PM
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Thanks hornet and hank. I'm just gona have jiffy do a merc/dex three 100 percent fluid swap for 99,99 can't beat it. Thanks guys.
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Old 09-20-2009, 03:31 PM
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you can use mercon V in a 4r100

http://www.powerstroke.org/forum/7-3...ge-change.html
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Old 09-20-2009, 03:34 PM
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Last time I asked ford what to put in my trans they said mecron v........
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Old 09-20-2009, 03:44 PM
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Quote:
Originally Posted by dmc919 View Post
You can if you like. I went to the shop saturday and had mine flushed. They asked what kind of fluid I had and I told them dex III. They showed me one that was out of a truck because of dexV. They told me NO dexV. They have a 01 f350 service truck with 475k on the stock engine and trans. Never done anything other than change the fluids on time and a glow plug relay. I figure that if dexV was ok they they would have used it back in 2000 when mine was new. It was out then.
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