98 Pont. Gran Prix SE V-6

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Howardthelok - 21 Nov 2005 06:14 GMT

Car runs great, took it in for my normal 3K oil change & wanted the
radiator flushed which I have done twice a year. Discovered that oil was
in radiator. There is nothing wrong with the radiator but I am having it
power flushed tomorrow & if oil returns within 2 weeks I will be concerned
that I have a blown gasket or a slightly cracked block. Is there any other
way oil could get to my radiator? What do U suggest.

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Dennis Smith - 21 Nov 2005 08:43 GMT

>Car runs great, took it in for my normal 3K oil change & wanted the
>radiator flushed which I have done twice a year. Discovered that oil was
>in radiator. There is nothing wrong with the radiator but I am having it
>power flushed tomorrow & if oil returns within 2 weeks I will be concerned
>that I have a blown gasket or a slightly cracked block. Is there any other
>way oil could get to my radiator? What do U suggest.

Which V6 is in it? The base 3.4L Chebbie variant or the 3.8L Buick? The
3.4L is well known for intake gasket failure which can lead to oil and
antifreezing mixing.

Its also possible that the automatic tranmission oil cooler which is
installed in one of the radiator side tanks is leaking and allowing oil to
enter the cooling system. You would notice either the tranmission fluid
level dropping and/or being contaminated with antifreeze.

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Dennis Smith

-1971 Trans Am - 455 H.O. - M21 4speed - Cameo white/blue stripe-
-1973 Trans Am - 455 - TH400 auto - Buccaneer red-
-1984 Trans Am - 5.0 L - TH700R4 auto - Royal blue/silver aero-
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