engine oil in coolant

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

Those are pretty much the only options. At least its just oil in the coolant, not the other way around. Most likely the gasket.

You might want to try some http://www.steelseal.com ,and let us know if it works.

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.

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:

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