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Apr 26, 2009 | 08:27 AM

mudbeast2

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Joined: Jul 2008

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From: Port St Lucie, FL

Fork Oil

What is the correct grade oil for the forks on a 08 Fat Bob? Do all bikes use the same grade oil?

Apr 26, 2009 | 09:10 AM

paul s

Outstanding HDF Member

Joined: May 2008

Posts: 2,166

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From: la

It depends on how much you weigh and how stiff you want your front end. I went with Amsoil Shock Therapy 10W. and it's working good for me. I was told factory is 5W light, the 10W is medium.

Apr 26, 2009 | 09:53 AM

madden23

Road Master

Joined: Apr 2007

Posts: 949

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From: Pacific Northwest

If your front seems "bouncy" go with heavier oil as it will increase rebound, I have 15W in mine.

Apr 26, 2009 | 10:02 AM

mudbeast2

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Joined: Jul 2008

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From: Port St Lucie, FL

When I installed my chrome lowers, I used 10 w. I just wanted to make sure it was going to be ok. The bike stii rides great. Thanks for the help.

Apr 27, 2009 | 08:13 AM

SC-Longhair

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Joined: Feb 2008

Posts: 11,483

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From: Passaic County, NJ

I added heavy (20w) to my front end with the hopes of it helping to relieve some of the diving under braking. No such chance. Also made the ride very stiff up front. I initially grabbed a 10w or 15w and the indy shop suggested the 20w. Oddly enough the 20w was cheaper than the 10/15w so it wasn't about him making more money.

Apr 27, 2009 | 09:08 AM

Toypuller

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Joined: Feb 2009

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From: In your head rent free

I have Progressive springs and use a 20W.

Ride is a little to stiff for me. Grabs the road like crazy, but does cause some harshness.

I am going back to a 10W when I change out the front tire again.