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Old 12-13-2009, 12:39 PM   #9
JapRulezz
 
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Drives: yaris sedan 2NZ-FE
Join Date: May 2007
Location: Egypt
Posts: 75
Quote:
Originally Posted by yaris-me View Post
A dirty air filter doesn't make the oil dirty. The oil gets dirty from blow-by, gas escaping past the piston rings from the combustion chamber to the crank case. The heat in the crank case removes the hydrogen from the fuel and makes carbon which darkens the oil. as the engine wears or if you drive with spirit, you get darker oil.
does this mean that the cone filter has no effect on the color my oil in a direct way ?


Quote:
Originally Posted by jambo101 View Post
That 8000kms oil looks like normal color to me,after 8k it looks dark because its working.
How long before you change the oil?What do the engine designers and engineers say in the owners manual?
the manual says every 10,000 KM
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