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Old Dec 9, 2014 | 07:15 PM
  #16  
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Ahsai
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Originally Posted by JayG
I'm probably over thinking it.....
Totally BTW, you realize that the temp diff alone (room vs fully warmed) contributes to ~0.4L volume difference?
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Old Dec 9, 2014 | 09:18 PM
  #17  
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Originally Posted by Ahsai
Totally BTW, you realize that the temp diff alone (room vs fully warmed) contributes to ~0.4L volume difference?
That is what I noticed and on my 3.2l Boxster, it is about 1/2 that.
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Old Dec 9, 2014 | 09:21 PM
  #18  
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Originally Posted by Ahsai
Totally BTW, you realize that the temp diff alone (room vs fully warmed) contributes to ~0.4L volume difference?
Not that I didn't believe you, but I had to do the calculation myself. From 0 to 100 Celsius you gain almost 2/3 of a quart. Wow.
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Old Dec 9, 2014 | 09:44 PM
  #19  
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Yeah, I assumed 70F to 180F on 9L of oil with coeff of expansion 0.00039/F

Definitely can be detected at the dipstick. The other equally important factor is the temp of oil at engine shut down. The higher then temp, the more the oil will drain back. The lower the temp, the more oil will cling on to the moving parts of the engine.
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