Coolant in motor oil

2002 PONTIAC GRAND PRIX

238,000 MILES • 6 CYL • FWD • AUTOMATIC

PACKERFAN9204

MEMBER
2 POSTS

I checked my motor oil. It looked cloudy instead of the usual light brown color. Is it possible that a gasket blew allowing the anit-freeze to flow into the motor oil and vice versa? Thanks.

Mar 20, 2011 at 10:17 PM

RASMATAZ

✓Experienced Mechanic
75,992 POSTS

You sure its not due to condensation not warming up the car properly-if not could be a blown headgasket, cracked head or block -intake manifold leak-

Mar 20, 2011 at 10:20 PM

PACKERFAN9204

MEMBER
2 POSTS

I'm fairly certain it's not condensation. Last week when I checked the oil it was at the full mark with a light brown clear color. This week when I checked the oil it was way over the full mark and it was a cloudy brown color. Also when I drove the car on Friday the temp gauge was showing the car heating up and the heater was blowing cold air then suddenly the heater would blow hot air and the temp gauge dropped back down to a more normal temp. Any idea what the cause might be? Thanks.

Mar 20, 2011 at 10:48 PM

RASMATAZ

✓Experienced Mechanic
75,992 POSTS

Coolant making it inside the crankcase-get it pressure tested

Mar 20, 2011 at 11:15 PM

MHPAUTOS

✓Experienced Mechanic
31,937 POSTS

You can do a head check, this is a simple chemical test to check for co in the cooling system, do this test to prove or eliminate a head problem.

Mar 20, 2011 at 11:25 PM

RASMATAZ

✓Experienced Mechanic
75,992 POSTS

The bloc chek contains blue chemical fluid that when combustion gas is present in the cooling system it will turn yellow or do it with cooling system pressure tester or 5 gas analyzer

Mar 20, 2011 at 11:33 PM

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