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Old 03-28-2013, 10:56 AM   #19
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Joined: Oct 2008
Location: Athens, Greece
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Originally Posted by genka View Post
OK, I'll ask a question that's been bothering me for a while. The oils with the low number after the "W" are recommended for cooler ambient temperatures. Why do the ambient temperatures matter if the working temperature inside the engine is much higher?
Because the working engine temperature depends on the ambient temperature.
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