Primary oil after 24h

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Mar 23, 2022 | 03:09 PM

steveknobz

Thread Starter

Stage II

Joined: Mar 2022

Posts: 2

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From: Stockholm

Primary oil after 24h

Hi,

I did some oil changes yesterday after installing a new pulley. After a test ride today I noticed that it was leaking oil from my shift lever and I suspect that I might have forgotten the gasket inside the primary. So I just drained the brand new oil from the primary and to my surprise it’s almost black?! This can’t be normal? What can be the cause of this in that case?

Thanks!

Mar 23, 2022 | 03:13 PM

brakeless

Seasoned HDF Member

Joined: May 2017

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From: NorCal

The chain and all the other parts inside, including the inside walls are coated in the old oil. It doesn't take much black oil to make clean oil turn black.

Mar 23, 2022 | 04:47 PM

steveknobz

Thread Starter

Stage II

Joined: Mar 2022

Posts: 2

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From: Stockholm

Alright, thanks for the quick reply!

Mar 23, 2022 | 05:27 PM

smitty901

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Joined: Feb 2008

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Normal ride on

Mar 23, 2022 | 05:33 PM

Jackie Paper

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Joined: Mar 2010

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From: Honah Lee

My oil in the primary has never looked like that with 50K.

Have you been running a non detergent gear oil like Formula + for non filtered gear boxes and switch to a high detergent motor oil?

I usually change all 3 ever 5k however. Been in primary twice and walls are filmed in black.

As long as you're getting 14.2 or so volts DC at around 2000 rpm, alternator is good and your good

Last edited by Jackie Paper; Mar 23, 2022 at 05:37 PM.