Primary fluid oil

[TapioK]

Hey people, the only thing the oil in your primary is for is to lube your chain. It is not for the clutch. you can run the clutch in an open primary, which uses no fluid.

Yup, but some oils are known to make clutch slip, some make plates stick more easily....

 

[07bigdog]

I used Lucas and found that it was slipping in 5th and 6th. Drained and put in Harley primary and it was good.

 

[Dragonslave]

Amsoil, Revtech are great but pricy. Right now I am running Drag Specialties brand in both primary and trans. Shifts really smooth and I have had no issues with it yet.

 

[BWG56]

I used Lucas and found that it was slipping in 5th and 6th. Drained and put in Harley primary and it was good.

 

[Lorenzo]

Yup, but some oils are known to make clutch slip, some make plates stick more easily....

It does sometimes help but as I said, you can take your clutch and put it in an open primary, doesn't need oil. Your primary chain does however.

 

[zenbiker]

Hey people, the only thing the oil in your primary is for is to lube your chain. It is not for the clutch. you can run the clutch in an open primary, which uses no fluid.

Wait... Am I under the enormous misconception that the primary oil doesn't lubricate the "wet clutch" plates???
Are you serious??

 

[Brew]

Keep in mind that wet and dry clutches have different sized surface areas. My wet compared to dry are different. The dry requires more surface area...