[cooling] low on water, but not thirsty

[fahrvegnugen at cox.net (David Utley)]

i've never pressure tested a cap on a reservoir that has done this. what
color cap is on your rocco? anyone remember the cap-pressure correlation?
(green/black/blue).
hth
Al
I am not sure, but I don't think there is a direct correlation.  I used to
have a blue one when I ran regular antifreeze, but the one I have now is 7.5
lbs, and it is blue as well...  (I run Evans coolant...)...

David