Lately Ive been getting a slight whiff of coolant when driving.There are no visible leaks anywhere and the coolant and oil still look good.I did notice that the coolant level is down about 2" but it been like that for 6 months.No pressure when the cap is taken off but I did see some bubbles in the coolant but it doesn't smell of exhaust. I don't know what else to look for so i'm open to suggestions.

 

It probably needs some water in it if its 2" low. My 79 Camaro does that from time to time and i just add some anti freeze.

 

I was wondering if it might be your heatercore?Just an idea.

 

it could be your head gasket!
look around the seam from head to block somtimes they will weep coolant !!
quite often its at the back of the head where you cant see it!!