i own a 2000 dts i have purple coolant in my car now and im interested which coolant i should use i dont no which one is best or if the purple stuff i have in there now is ok i bought the car with 200k and it had blown head gaskets so i dont no what they had in it befor

Purple? Use 50/50 Dex-Cool & distilled water.

ok thanks man i think it is some universal coolant or something