What ATF are you running in your 6sp manual / T-case - Ford Powerstroke Diesel Forum

 
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post #1 of 4 Old 06-19-2009, 11:01 AM Thread Starter
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What ATF are you running in your 6sp manual / T-case

What are you all running for ATF in your 6spds?

None of the local parts houses have a straight Mercon or Mercon V fluid only "all types" generic stuff. Most are marked DexronIII/Mercon(V) and some dont even get that specific. The manual specs Mercon only and not to use Multi type fluid.

I'm kinda at a loss the fluid obviously needs to be changed looking at it but I dont want to use the wrong type....Last manual I had used 80W90 which was a no brainer.

Your input would be most appreciated.

2000, F-350, Crew, DRW, 6 Sp, 4X4, 7.3, DIY Intake, 4in Turbo back Magnaflow Exhaust

Last edited by Mudbug63; 06-19-2009 at 11:03 AM. Reason: Spellereing mistake :)
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post #2 of 4 Old 06-19-2009, 11:10 AM
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regular mercon or mercon 5 either one will work fine , doesnt matter, heck you can put gear oil in it if you want to , just might shift stiff when cold , the main thing is that is is full

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post #3 of 4 Old 06-19-2009, 12:37 PM Thread Starter
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Originally Posted by SCUFFY828 View Post
regular mercon or mercon 5 either one will work fine , doesnt matter, heck you can put gear oil in it if you want to , just might shift stiff when cold , the main thing is that is is full
That is a interesting thought. ATF seems to be pretty thin stuff.....Would something like 75-90W GL-4/5 really be ok? I would think the wear would be less with a heavier oil.

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post #4 of 4 Old 06-19-2009, 01:04 PM
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gear oil isnt necesary , my point was that it doesnt make that big a difference , as far as lasting longer , maybe/ maybe not , if i did run gear oil, i would definitly run a thinner viscosity , like 75/w90

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