Will Oil Spill out when I pull the Head?

[amalventano@sc.rr.com (Allyn)]

> I'm going to yank the RD Hydro head today or tomorrow, I was going of
> drain off the water /coolant mix (currently about 90/10 now anyway) but
> do I need to drain the oil? It's only been in there for about two m
> miles, I was hoping to use it during the dialing in and purging process.

the oil can stay, but its almost impossible to not spill some water down the oil
passages during removal (head likes to store some water).
Al