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1977 450SEL..oil in coolant

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Old Mar 28, 2004 | 09:05 PM
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1977 450SEL..oil in coolant

I am looking at buying a 1977 450sel for $500.00 The body, interior and suspension is in great condition. The owner has told me that he was getting oil in the coolant. He pulled the heads, thinking it was a gasket or cracked head. I guess a Benz mechanic told him it couldnt be the heads, it has to be a cracked block. Any opinions?? Apparently, the engine was rebuilt a few years ago. could it be something simpler than a cracked block? Thank you in advance
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Old Mar 29, 2004 | 06:45 PM
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Re: 1977 450SEL..oil in coolant

Originally posted by kokobeach
I am looking at buying a 1977 450sel for $500.00 The body, interior and suspension is in great condition. The owner has told me that he was getting oil in the coolant. He pulled the heads, thinking it was a gasket or cracked head. I guess a Benz mechanic told him it couldnt be the heads, it has to be a cracked block. Any opinions?? Apparently, the engine was rebuilt a few years ago. could it be something simpler than a cracked block? Thank you in advance
I don't have much experience with cars that old, but it might not be engine oil. It could be transmission fluid, which on a car that old might have the same color as oil. In which case, it could be the radiator that has failed, causing trans fluid to mix with the coolant.
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Old Mar 30, 2004 | 09:50 AM
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'00 S320 W220, '98 A160 W168/ sold in 2005 '86 260 E W124 '90 260E W124
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how in the world would transmission fluid ever have a chance to mix with the radiator coolant???????????
If the head gasket is ok and there's still oil in the coolant it is the block or the head which has leaks!!!!!!!
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Old Mar 30, 2004 | 11:38 AM
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2001 C-320
KOKO;

DON'T BUY THE CAR ............. COULD TURN INTO A LABOR OF LOVE.

BW
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Old Mar 30, 2004 | 02:06 PM
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The trans fluid cooler is built into the radiator. If the separation between the two fluids fails, they will mix.
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Old Mar 30, 2004 | 06:57 PM
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Thanks to all who responded. I decided not to buy the car. To many unknowns. Thanks again.
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