Originally Posted By: Greasymechtech
https://www.zf.com/na/content/media/unit...ed_Oil_List.pdf
This list is for
light duty light load applications..................
and it doesn't answer OP's question.
Originally Posted By: rideahorse
I have a Ford F-350 2002 Diesel Crew Cab Long Box 4wd dually with the ZF 6 speed manual trans. Mine has the oil cooler and pump.
Would I be better off using a manual transmission fluid or Mobil 5-30 HM than ATF. It lives on our 4 horse goose neck. It only has 129,000 miles on it but it has never been changed yet.
The truck is bone stock but I have plans to bump it up a little.
Ramblejam did answer OP's question.
Originally Posted By: Ramblejam
Originally Posted By: rideahorse
I have plans to bump it up a little.
If you're going to be putting more power thru a ZF S6-650, a different lubricant would be appropriate -- Ford did the same thing in later model years when ratings went from the 275hp/525tq of yours, to 350hp/650tq.
https://www.fcsdchemicalsandlubricants.c...mission%20Fluid
Now, this S6-650 manual transmission calls for ZF TE-ML_02 fluids ..................
where
SAE xxW-90 is medium duty/medium loads and heavy duty/heavy loads parts of the ZF TE-ML_02 fluid list ,
and ......... I repeat for clarity of issues ......
ATF's is light duty light load part of the TE-ML_02 fluid list.
Castrol Manual GL 4 80W90 .........
http://www.castrol.com.ru/castrol/ep90.php