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Itinerant Wing Preacher
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Any body have a recommendation on fork oil weight for an 1100 interstate ? I am going to replace the seals soon. Jay
 

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1987 GL1200 Interstate
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If you're running stock springs, ATF is recommended by Honda. If you are using Progressive springs you'll benefit from a little stronger dampening. Try 15 weight.
 

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Use 15 wt. no matter what springs you have. ATF or 10 wt. does not dampen the rebound well enough.
 

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I put in Progressive springs and went with 15W too. Got fork oil at the local cycle shop.
 

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The big guy gl1100 wrote:
will the heavier oil help keep the fork from banging to the top on bigger bumps?
Yes,it will. It also helps to keep the front air pressure around 21 psi. Much more thanthat and it can start to slap.
 

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1987 GL1200 Interstate
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The big guy gl1100 wrote:
will the heavier oil help keep the fork from banging to the top on bigger bumps?
Fork oil's job is to control rebound, not compression.
 

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Just another ORF!
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Jay, if you are going through all the work of changing seals and fork oil, you'd be wise to check the fork spring length to make sure they haven't sagged to their service limits, which is found in the service manual.

If your springs are sagged, Progressives are cheaper than stock springs and are warranted for life against sag



Dusty
 

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Itinerant Wing Preacher
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Probably will go with progressives, just trying to maximize the little bit of coin I have to spend. Both the forks and rear shocks need a rebuild. Plus a few other things. As a plus I replaced the timing belts and water pump before I bought the bike. Waiting on a caliper from Broke Winger, and all the brakes will be new. So I am well on the way.
 
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