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Discussion Starter #1
Recently I cleaned up the outside of the engine block and took off the oil pan. There seems to be some discoloration on the girdle:



Is this a sign of abnormal heat damage? Should I be worried about this or is it just normal wear and tear?
 

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Brokedick Millionaire
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someone didn't change their oil enough, it is not heat damage.

The starting basis of my D15Baby8

 

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05 Legacy GT
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That's normal, that's just oil. You don't want to see blue. You bottom end looks good.
 

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Discussion Starter #6
Phew...thanks! I keep thinking somethings got to be wrong with this block, but I guess that's just based on how clueless I was when I bought it. :sweatdrop:
 

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A friend of mine got a D15B from a supplier in Seattle that the oil had solidified and when we pulled the pan, there was an imprint of the crank and girdle in the "oil". That one could have used more frequent oil changes, but it looks fine.
 

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Brokedick Millionaire
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after I cleaned mine up........same block as above

 
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01 Ford Focus SE
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its all good. mine was like that too when i rebuilt my Z6
 

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Aluminum doesn't change its color at any temperature. Even fully melt liquid aluminum is just matte grey in color.
 

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Aluminum doesn't change its color at any temperature. Even fully melt liquid aluminum is just matte grey in color.
true, but it can have a contaminate "burn" its surface. the "burn" is what you are seeing. like a smoke "burn" on a fall after a fire in a room.
 
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