Lubrication
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Novice
Joined: Apr 2016
Posts: 18
Likes: 2
From: Texas
Lubrication
So after researching around I've found 1000 different answers. My 05 FXD has a probably never seen a primary case or tranny fluid change (new to me, so I rather do it to be safe). These thoughts are prompted by the bike not wanting to downshift into 1st when moving, giving me a grinding sometimes, so i've stopped doing that unless i'm below about 10mph and I need to start moving again. And occasionally it doesn't like to find neutral or shift smoothly into 2nd gear.
so the question, what should I actually run in the primary case and the transmission. I have easy access to 75W-90 Synthetic gear oil and the high quality ATF VI fluid, but that may not be what's best.
Teach a newbie if yall don't mind.
so the question, what should I actually run in the primary case and the transmission. I have easy access to 75W-90 Synthetic gear oil and the high quality ATF VI fluid, but that may not be what's best.
Teach a newbie if yall don't mind.
Tourer
Joined: Aug 2015
Posts: 368
Likes: 46
From: TUCSON, AZ.
Personal Preference...
"what should I actually run in the primary case and the transmission".
My recommendation would be, #1. Red Line 42904 V-Twin Primary Case Oil. and #2. Red Line 42804 V-Twin Transmission Oil.
My recommendation would be, #1. Red Line 42904 V-Twin Primary Case Oil. and #2. Red Line 42804 V-Twin Transmission Oil.
Road Captain
Joined: Dec 2013
Posts: 539
Likes: 5
From: Harleyland, USA
No matter what tranny oil you're running, it's going to grind under those circumstances (downshifting into first while moving above 10 mph.) For the record, Mobil One V-twin in both holes is effective, simple and easy to find.
Road Captain
Joined: Dec 2013
Posts: 539
Likes: 5
From: Harleyland, USA
It is, you forgot to use your Decoder Ring (assuming the moderator let you have one.)
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Road Master
Joined: Dec 2012
Posts: 848
Likes: 30
From: CO
This. 100%.
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Seasoned HDF Member
Joined: Jul 2008
Posts: 9,281
Likes: 1,139
From: southeast PA
Aside from the never ending debate on which oil to use, you should plan on doing a complete clutch adjustment when you're done. I don't downshift into first while moving but if that's your style it may be easier with the clutch set up properly.
