Today I noticed the engine temp rising a bit. [Solved]

[titodj]

Too late..
I already ordered a Combustion Leak Detector kit, Funny because I got the reservoir and the liquid separate and end up paying 27 instead of almost 40.
I really hope I find that was an unnecessary buy, but I'm not looking forward for a head gasket project, and better be safe than sorry
Anyway, I think is worth having it around.

This whole problem started with getting random warnings for a second or two about low coolant level, but everytime I open the cap, the little rod pups up.
So I guess there's something funny going on with the expansion tank anyway.