05 Subaru STI (Turbo) Engine Rebuild.

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Originally Posted By: SilverGGA
Did he use Redline street oil or racing oil?


In the linked thread he said it was the red bottle racing oil.
 
Originally Posted By: Drew99GT
That probably explains it.........no detergents! What a schmuck.

I wouldn't think racing oil affects buildup in the combustion chamber though.
 
Non-detergent Racing oil at 3k OCI, running with a [censored] tune and not warming up before or cooling down after running hard.

I am surprised the engine lasted 53k miles!
 
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