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Engine rusting from outside

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Old 11-04-2011, 09:08 AM
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Engine rusting from outside

Hi Folks,

While replacing my air filters i noticed that the engine from outside has developed some rust. Is this normal as all my other cars had the rusted engine from outside since none of them had the underbody cover. Should i be concerned??
Old 11-04-2011, 09:38 AM
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'11 C300 Sport 4Matic, 911 Turbo, Fiat Abarth, Ram CTD
Originally Posted by sudhanshu3
Hi Folks,

While replacing my air filters i noticed that the engine from outside has developed some rust. Is this normal as all my other cars had the rusted engine from outside since none of them had the underbody cover. Should i be concerned??

Considering the engine block and heads are aluminum I doubt the rust you're seeing is coming from there. If I could guess, you're probably seeing the exhaust manifold or some type of heat shielding. In which case, the rust is normal.
Old 11-04-2011, 09:43 AM
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no it's not the exhaust manifold but the lower part of the engine that is rusting.
Should'nt the underbody cover prevent this from happening?
Old 11-04-2011, 11:10 AM
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'11 C300 Sport 4Matic, 911 Turbo, Fiat Abarth, Ram CTD
Originally Posted by sudhanshu3
no it's not the exhaust manifold but the lower part of the engine that is rusting.
Should'nt the underbody cover prevent this from happening?

Where do you live? Depending on where that is (Arizona Vs Maine) the air contains more moisture. You don't need direct contact with water to cause rust.
Old 11-04-2011, 12:15 PM
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Im from MA but is this normal to have rusting engines ona car like this?
Old 11-04-2011, 03:06 PM
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late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Aluminium corrodes. It does not rust. The engine block & head are aluminium.
Old 11-04-2011, 05:33 PM
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2008 C300 Sport 6MT X-Pipe
Originally Posted by sudhanshu3
Im from MA but is this normal to have rusting engines ona car like this?
Hmmm. I live in MA and my 2008 W204 has no rust on the engine, it actually still looks brand new. Do you live near the ocean? The only problem I have are my center caps and lug bolts have become a little corroded. I’ll be asking my dealer to replace them under warranty in the spring. Where did you buy your car? Chambers?

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