Motorcycle oil for a NV5600?

[Cummins12valve]

Hello, new to the site. I am curious whether any of the new motorcycle synthetic oils are harmful to brass synchros?
Would the friction modifiers in motorcycle oil help or hinder shift smoothness? Just looking off an off the shelf alternative to the $30 quart Dodge oil. All opinions appreciated, thanks.

 

[dparm]

What is that trans spec'd for?

 

[Cummins12valve]

Mopar's oil is a 5w30ish weight oil according to internet research..But I believe Amsoils MTL is a 70W80, and they say it can be used in place of 5w30, 10w30, and 10w40 in transmissions. MS-9224 is the spec number, Texaco 1874.

 

[dparm]

There's an important distinction to be made here: does the trans say you can actually use motor oil, or does it have to be gear oil? It's true that motor oils and gear oils can have similar viscosities, but the additives are very different.

 

[widman]

You should use synchromesh fluid in there. it is thinner that most motorcycle oils and has the right additives for that transmission.

 

[ddtmoto]

Is a GL4, GL5 called for in owners manual? use the correct lube...use the good stuff

 

[Cummins12valve]

Thanks for the replies, I am going to go with the amsoil synchromesh 5w30. I will let y'all know how its working after a few thousand kms.

 

[Ken2]

The motorcycles I'm familiar with do not have synchronizers--they are not sliding mesh transmissions. They are constant mesh transmissions.