hi
I am looking to clean out my turbo honda engine but not wanting to damage it in the process. Somepeople says carbon/oil sludge build up is a good thing and others bad.... maybe this depends on the age of the engine. I have flushed the engine out once but it appears to make no difference... oil still comes out sludgy and black. Is there anything i can do about this? flush it twice? I was going to de coke it tonight but dont think thats going to make a difference to the oil. any help on this would be great.
I watched a drag racing video the other day and the oil he was taking out of the car looked seriously clean... like new! is it possible to achieve that on my car?

 

use a full sythetic oil and change it more often