cooloant

i think i have a huge problem here.
i just finished changing my oil and i noticed that my coolant was really low.
i noticed it was low before, about two or three months ago,
so I filled the resivoir.
i dont get it because there has always been coolant in the resivouir,
and its never even given a hint of overheating.
is it possible to have a leak in the head gasket?
could it be just because its been really hot out??
i havent seen any puddles, or leaks...dont smell anything burning??
whats up any ideas?? any way to find out if it is the head gasket??

A leaking head gasket will usually make small bubbles appear in the motor oil. Wait 10 minutes after you shut your car off & check the oil, if there are some bubbles on the dipstick, then you probably have a leak.

Also, you can get your cooling system pressure tested at a shop for a few bucks. That'll tell you what is wrong for sure.

i think i have a huge problem here.
i just finished changing my oil and i noticed that my coolant was really low.
i noticed it was low before, about two or three months ago,
so I filled the resivoir.
i dont get it because there has always been coolant in the resivouir,
and its never even given a hint of overheating.
is it possible to have a leak in the head gasket?
could it be just because its been really hot out??
i havent seen any puddles, or leaks...dont smell anything burning??
whats up any ideas?? any way to find out if it is the head gasket??

About 5 minutes with one of these.
http://tools.batauto.com/index.php?crn=223&rn=1086&action=show_detail

Good luck MT