themoneyshot

i know the 2012 6 speed takes a ms-9224. synchromesh or similar. i have looked up two synthetics which state they are suitable but have different viscosities.

royal purple synchromax appears to be a straight 10w while the amsoil synchromesh is a 5w-30. am i missing something?

jeeperjkjeeper

I have always used Amsoil Syncromesh in my 6 speed and it made a huge difference in shift quality

Biggy

x2 ................

AlexjeepVb

X 3...... Amsoil Syncromesh is the way to go

Mr.T

X3 on the amsoil syncromesh.

jeepmojo

but still has to be better than factory stuff thats made to cause failures

RevyJKU08

Been using Redline MTL on my 6spd the past 6 years...meets MS-9224.

Sandypants

So you changed out your factory fluid for this? I have a 13 rubi 6 sp. would i notice a difference? just shift smoother or what?

AlexjeepVb

I changed out my factory fluid for the amsoil in my 2013 rubicon. It made the cold shifting better, and tranny feels all around smoother. Its not a life changing difference, but def worth the small cost and time to do it in my opinion.

Sandypants

Awesome, i live in Alaska now, so with the cold sounds like a great thing. BTW just wondering does your shifter vibrate a lot? nothing violent but sometimes im like hmmm is there something wrong feels strange...

though it rides and drives perfect, might just be me being timid of my new baby.