ABS Shock question

Friend has a 2500 mile shock off his 2009.
But when he removed it, he unbolted the hose from the preload adjustment knob assembly. Knowing some fluid was lost, is there a way to refill and possibly bleed or are we SOL ?

 

I am pretty damn sure it can be topped back off.

I haven't done it, but there are others that have. Terry Smith might have some insight.

If I was doing it without any guidance or tutorial, I think I would back off the adjuster all the way (to maximize to the oil space) and "fill" each side and have it situated for filling and quick assembly. You should be able to get the shock reservoir and the adjuster reservoir tipity-topped before attaching the banjo. I think rear shock fluid would be a good fluid. Then maybe crack a banjo slightly while screwing in the adjuster to bleed until fluid just comes out.

But, again, I haven't done it. I have been thinking about it recently to adapt an 86 adjuster on an 87 shock.