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engine oil in coolant


pinhead159
11-05-2010, 11:45 AM
Hello everyone,

I have oil in the coolant of my GM 350 what does this indicate?
This engine is in a 1980 Chev C30 steep-van and is a GM replacement crate motor.
The water pump failed and it did get hot before the oil showed up in the radiator.
I am thinking a blown head gasket, cracked head or block.

Jack

vgames33
11-05-2010, 08:49 PM
Those are pretty much the only options. At least its just oil in the coolant, not the other way around. Most likely the gasket.

danielsatur
11-05-2010, 09:08 PM
You might want to try some http://www.steelseal.com ,and let us know if it works.

MagicRat
11-05-2010, 10:22 PM
Are you sure its not auto transmission fluid in the radiator?

A leaking transmission cooler is a common route for oil to get in coolant.

Otherwise you may have an internal crack in the block, where an oil gallery is allowing pressurized oil into the coolant. I would not suspect a head gasket simply because there is no pressurized oil passing through it, and I cannot see drainback oil getting into a pressurized cooling system.

Blt2Lst
11-05-2010, 10:34 PM
You might want to try some http://www.steelseal.com ,and let us know if it works.


Mechanic in a can to the rescue.. :screwy:

danielsatur
11-06-2010, 04:37 PM
Some shops charge for a new head gasket repair $1200 to fix, use this $100 product for repair.

http://www.youtube.com/watch?v=3suQy44G_B0

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