what causes engine oil to get in coolant system on 2003 Saturn Vue

what causes engine oil to get into coolant

Asked by for the 2003 Saturn Vue
http://www.parts.com/schematics/mechanical/V2P040.gif image # 38 your saturn has a oil cooler but I cant see where it goes possible to the radiator and if it does it could leak into the radiator and you can find a repair shop to check this here http://repairpal.com/directory?address=43560&car_brand_names=Saturn
Lower Intake gaskets, GM wont tell you this but the DEX COOL coolant they switched to is eating the gaskets!
2 answers 1 comment
I THINK IT MIGHT BE YOUR HEAD GASKET. IT MIGHT BE FAILING BECAUSE OF WARPAGE OF THE HEAD