COOLANT CONTAMINATED WITH OIL

2003 Cadillac CTS

Tiny

Kenneth Nutt

October, 1, 2009 AT 6:51 PM

Engine Cooling problem
2003 Cadillac CTS 6 cyl Two Wheel Drive Automatic 164000 miles

I noticed that in the coolant reservoir that there was a little contamination from oil in the coolant. A day later it overheated and there was more contamination. It doesn't appear to have any water in the oil in the crankcase though. Any suggestions as to what is the cause of this.

FOUND 13549 RELATED QUESTIONS

2 Answers

Tiny

obxautomedic

October, 1, 2009 AT 8:50 PM

Hi Kenneth,

First - does it look like engine oil or transmission oil

If it looks kinda reddish it is most likely tranny fluid and the tranny oil cooler in the radiator has failed.

If is engine oil then most likely it is a blown head gasket.

.

Tiny

alexanderbarreiro

December, 22, 2012 AT 7:51 PM

It's the oil cooler but in this year the oil cooler is located under the intake not in the radiator

Please login or register to post a reply.

Thermostat Replacement Mercedes Benz C230
Thermostat Replacement Chevrolet Blazer
Radiator Replacement Mercedes Benz ML 500