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[tazmun]

 Does anyone know how much oil is in the standard air shock, and what weight oil it is?
I took them off, and one leaked a little oil out. The bike is a 06 CVO Ultra.

[Dan_Lockwood]

Does anyone know how much oil is in the standard air shock, and what weight oil it is?
I took them off, and one leaked a little oil out. The bike is a 06 CVO Ultra.

Can't swear to a full height 13" air shock, but my '09 12" SERG air shocks hold 10 oz. 

I drained mine and did a fluid swap out to a racing front fork 10w synthetic oil and it did make a difference and for the two hours it took to drain and refill, I think it was worth it.  I'm still looking at going to an upgraded non-air shock possibly this winter.

[Sklywag]

The 13" shocks hold 12oz if truly empty.  When I drain them & refill them (I pump the fluid out) I measure what comes out.  Typically I get 10.8 to 11.5 oz out of the shock, doesn't matter if it's 12" or 13".

I estimate that the fluid from HD is 3 weight, maybe 5 at the very most.  It is like water.  I use 10w Amsoil Synthetic Shock Therapy fluid when I refill them.

The 10w works very well, much better ride & way less air pressure so the shock can actually work.  I use to run as much as 50psi when we travelled fully loaded, 2up.  Now I never run over 30psi.  In fact this last weekend we were on a trip & the bike was riding rough, I actually had to lower the air to 25psi because the weather was cold, it was in the 40's & the 10 w with the 30 lbs was to much air.

[Rimjam]

Has anyone replaced the air shock oil with a more common fluid, ie. hydraulid fluid, automatic trans fluid, front fork oil, jack oil?  If so, what were the results?