Your coolant seals are going bad.. I wouldnt say its blown or went to shit untill white smoke blows out the exhast..but your time is limited and watch your temp guage..

Levi should be able to help you with your rebuild..

You cant just change coolant seals.. you will need a full engine gasket set..then once you crack open the engine you have to check your rotor housings for flaking and wear..

Then pending on your milage and the wear on your apex seals.. and how long you plan on keeping the car..determins if you need apex seals..

I know it sounds getto..but you can put in 100. in gaskets to get it back running..or $100. plus another $gestimate of 500-800. on new seals..

Its up with you ..