What oil are you running in your ZF6 + Xcase - Ford Powerstroke Diesel Forum

 
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post #1 of 6 Old 10-27-2010, 03:29 PM Thread Starter
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What oil are you running in your ZF6 + Xcase

My truck is due for a complete oil change, i was thinking about switching to Synthetic 75W90 In my tranny, Xcase and differentials. Anybody else using that oil, if not what are you using


1999 F-250 SUPERDUTY ZF6

37'' Toyo MT - DIY Intake - 2.2K Mod - 4'' Turbo Back SS - GTP38R - And Lots more.

'' My Lug Nuts Require More Torque Than Your Honda Makes ''
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post #2 of 6 Old 10-28-2010, 05:16 PM
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i got a 2wd 6sp, and supposedly, your to run ATF fluid. I recently changed mine out, with Amsoil synthetic...6qts.

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #3 of 6 Old 10-28-2010, 07:36 PM Thread Starter
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That is what the book is calling for, i guess i should go with ATF, I was just thinking maybe somebody went with 75w90 or something else and had good luck with it.


1999 F-250 SUPERDUTY ZF6

37'' Toyo MT - DIY Intake - 2.2K Mod - 4'' Turbo Back SS - GTP38R - And Lots more.

'' My Lug Nuts Require More Torque Than Your Honda Makes ''
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post #4 of 6 Old 10-29-2010, 08:44 AM
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definitely needs to be an ATF. I put just reg valvoline Merc V spec ATF in and i don't really like it. I'm going to switch to Royal Purple or GM ATS-295 spec ATF. That's what the chevy boys are running, and their fluid is more critical because they don't have coolers like our badass Fords do.
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post #5 of 6 Old 11-01-2010, 09:42 PM Thread Starter
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1999 F-250 SUPERDUTY ZF6

37'' Toyo MT - DIY Intake - 2.2K Mod - 4'' Turbo Back SS - GTP38R - And Lots more.

'' My Lug Nuts Require More Torque Than Your Honda Makes ''
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post #6 of 6 Old 11-05-2010, 07:41 AM
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NO our transmissions dont take gear oil they take ATF. i know it sounds stupid but i checked a bunch of different sources before i changed mine. i wanna say that i just put standard MerconV in my tranny. if you dont believe me take the fill plug out of either one and smell it. gear oil smells like sulfur like im sure you know.

early 99 F250
ZF6
its stock, at least thats what i tell people
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