I went to change my oil yesterday and realized i was about 2 quarts low. Then when i looked in the coolant reservoir I noticed it was real oily. I stuck a screw driver in it just to see and it seems to be oil. I dont know if my Manifold gasket is the issue?
Chevrolet Q&AAsk Your Question
2004 Chevrolet Monte Carlo Question: Oil is getting into my Coolant.
Answer #1G. T. Service Center (4234 Answers) , Stephenville, TX - (254) 638-3236ProfessorG July 07, 2014, 19:19Master
Possible engine oil cooler ruptured.
ReplyDen0812, July 08, 2014, 19:49Rookie
it doesnt have a oil cooler. i only have the 2 tranny lines going to radiator. Wouldnt there be 2 lines for the oil cooler going to other side of the radiator?
ReplyProfessorG, July 08, 2014, 22:52Master
Sorry that one has an external oil cooler, cooled by ambient air. Some other GM engines have the cooler in the engine valley under the intake that rupture, some V6 Cadillacs.
ReplyDen0812, July 09, 2014, 20:03Rookie
Any other suggestions?
ReplyProfessorG, July 09, 2014, 23:19Master
Been really busy with diagnostics on many other cars this week. Trying to consider other options when time permits.
ReplyDen0812, August 04, 2014, 20:58Rookie
fixed it was intake manifold gaskets
ReplyProfessorG, August 06, 2014, 19:20Master
Usually coolant in the oil with intake gaskets. Glad you found it.