91 fork oil capacity

Joined
May 15, 2015
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26
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United States
Looke all over but cant seem to find oil capacity for 91 1100. I know the viscosity is 7.5. An upgrade to 12.5 -- 15 is recommended but-- how much in each leg??
Cheers
 
Joined
Mar 13, 2012
Messages
5,046
Location
soCal
Bike
'97 ST1100
STOC #
687
Re: 91 frok oil capacity

not at home to look up the volume in the manual, but IIRC the stock oil is Honda SS7, which is 5W, not 7.5. The other Honda oil, SS8, is 10W, there's no Honda fork oil I'm aware of that's 7.5W. Upgrading to 12.5 isn't a bad idea, but straight 15W is probably going to be too stiff. I tried it once, and went back to 12.5W.

Many will argue that setting oil level by distance measurement below the top of the fork tube is preferable to measurement by volume, if neither figure is reported by the time I get home I'll post both methods from the manual when I get a chance.
 
Joined
Mar 13, 2012
Messages
5,046
Location
soCal
Bike
'97 ST1100
STOC #
687
Re: 91 frok oil capacity

non-ABS model I assume

right fork volume 385cc, left 435cc

right level 190mm, left 187mm
 
OP
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Joined
May 15, 2015
Messages
26
Location
United States
Re: 91 frok oil capacity

this is sitting on bike , yes right an left. Please excuse if this is a daft question.
 
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