MOPAR S9417= what manual trans fluid

[Xtreme Legion]

I picked up royal purple but when I got home my haynes said use MOPAR S9417 or equal manual trans fluid

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[34tftf]

i am pretty sure that as long as your royal purple is 75w 90 you are good

 

[Xtreme Legion]

Tranny needed ATF + 4. If someone knows I can def use royal.purple ill swap on next flush

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[DSM1G90]

Why you use the ATF+4 is that Chrysler designed the tranny with felt lined syncros. ATF+4 has what's called an FM - "Friction Modifier"- that works with the lined syncros.

Other fluids don't have the modifer, thus the syncros can eventually self destruct.

..and the same with Chrysler and DSM Mitsu auto trannies: ATF+4 is also used. Don't use Dextron, or that stuff will destroy the friction discs in the tranny..

 

[Xtreme Legion]

Why you use the ATF+4 is that Chrysler designed the tranny with felt lined syncros. ATF+4 has what's called an FM - "Friction Modifier"- that works with the lined syncros.

Other fluids don't have the modifer, thus the syncros can eventually self destruct.

..and the same with Chrysler and DSM Mitsu auto trannies: ATF+4 is also used. Don't use Dextron, or that stuff will destroy the friction discs in the tranny..

So using the ATF + 4 is better then running the ROYAL PURPLE 75W-90

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[DSM1G90]

Wow, paper/fibrous syncros - no wonder they need the modifier .. which other fluids don't have.

Looks like AMSOIL 5w30 MTF is the clear winner in this debate.

EDIT: check this link out on more discussion with the required fluid for a manual tranny attached to a 420A:http://www.dsmtuners.com/forums/420a-bolt-tech/351793-recommended-transmission-fluid-my-95-eclipse-gs-dealer.html

..and read the posts by WISEMAN - BullettDSM .. he's an NT owner.

-DSM