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Airshocks. Selection and tuning

Everything you ever wanted to know about shock oil.

There are quite a few errors in there. I started with that sheet about a decade ago and first looked to verify data, then built a simple viscosity test rig and found even more interesting stuff. A lot of manufacturers wont' give you good info on what they use and a few simple drain tests can tell you the viscosity and clear everything up.

I think the one fluid I haven't nailed down yet is the Fox JM92. Fox claimed they use 10wt red oil in their MTB rear shocks for years. But they didn't. They were using a Torco RSF Medium instead which was 2/3 as thick.
 
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