[CaptainGizmo]

I think the cap is vented, so leaking out of the cap when the tank overfills is "normal".

If the picture you have, the fluid level is above "full cold".  If that picture was taken cold the system is overfilled.

I don't know if there is a way to make other fluid transfer into the hydraulic system.  Is it possible that you have just overfilled the tank?

Thanks for that input.  Yeah, I thought the exact same thing as you did, regarding the "hot" level.  Each time I've checked, it's been higher than what it should have been.

Oddly enough, nothing has been added over the course of the year or so after service at Newell.  But, with the unreal heat we've been having, maybe it's just expanded a bit too much in the system.

Can't think it's much of a problem, other than making a mess that was never there.  Hmmm.