1998 Cadillac Catera Q&A
1998 Cadillac Catera Question: why is my car overheating and the oil is fix in coolant resouir?
Sounds like blown headgasket. Check compression, pressure test cooling system , also a chemical test kit you can get to check for combustion gas getting through cooling system. - ziptie12
oil + coolant = blown head gasket... - your.mechanic
Smoke or steam from exhaust? Engine oil milky in color? - pushrod