Grease/ transmission oil?

[Marine One]

Hello all once again, I have another question that I need to pick your brains about.
I want to know what kind of oil/ grease to use for the crank case where the clutch flywheel and small bevel gear meet. I have thought about using some white grease or blue grease for general agricultural and tractors. Also considering transmission oil just because that is basically like a transmission. 2 solid pieces of metal grinding together at different speeds.
What are your thoughts and why? Has anyone ever tried this?

 

[butre]

use the thickest grease you can find, and make sure it stays out of the clutch. you can use gear oil if you're willing to make clutch pucks out of a different material and attach a filler neck to the clutch cover

 

[Marine One]

use the thickest grease you can find, and make sure it stays out of the clutch. you can use gear oil if you're willing to make clutch pucks out of a different material and attach a filler neck to the clutch cover

Do you mean new clutch pads?
And I have never heard of a filler neck.