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11-05-2010, 11:45 AM
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#1 | |
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AF Newbie
Join Date: May 2008
Location: weldon, California
Posts: 7
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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
__________________
Jack 1986 Pontiac Fiero Gt Fastback 2.8 V6 2-1987 Pontiac Fiero GT Fastback 2.8 V6 2002 Saturn SC-1 1958 Chevy C-10 truck |
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11-05-2010, 08:49 PM
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#2 | |
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AF Enthusiast
Join Date: Mar 2007
Location: canton, Ohio
Posts: 593
Thanks: 1
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Re: engine oil in coolant
Those are pretty much the only options. At least its just oil in the coolant, not the other way around. Most likely the gasket.
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11-05-2010, 09:08 PM
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#3 | |
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AF Enthusiast
Join Date: Mar 2008
Location: garner, North Carolina
Posts: 3,579
Thanks: 86
Thanked 100 Times in 100 Posts
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Re: engine oil in coolant
You might want to try some http://www.steelseal.com ,and let us know if it works.
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11-05-2010, 10:22 PM
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#4 | |
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Nothing scares me anymore
 
Join Date: Dec 2003
Location: City of Light
Posts: 10,702
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Re: engine oil in coolant
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. |
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11-05-2010, 10:34 PM
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#5 | ||
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AF Enthusiast
Join Date: Jan 2007
Location: redondo beach, California
Posts: 646
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Re: engine oil in coolant
Quote:
Mechanic in a can to the rescue.. 
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1989 Caprice Classic Wagon, Olds 307 ,SMI Q-Jet, 200R4 w/Shift kit, Flowmaster 50, Hotchkiss sway bars, KYB Shocks. Jet Chip, 1989 Mustang LX 5.0 5sp convertible 1992 Camry LE 2.2 1996 Suzuki RMX250 I'm a victim of circumstance [ 
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11-06-2010, 04:37 PM
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#6 | |
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AF Enthusiast
Join Date: Mar 2008
Location: garner, North Carolina
Posts: 3,579
Thanks: 86
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Re: engine oil in coolant
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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