hi,

is it normal to have bubbles flowing up from overflow reservoir. tank does not overflow and engine has not yet overheated, just seem to use more coolant lately.

so i'm just trying to find out if this is possibly just normal or are troubles brewing with head/gasket...

thanks for any input.

 

It is normal to have the coolant stirring up when the engine gets hot. As long as it is the right color. Ceck your oil too and make sure it looks and smells ok.