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Why would the oil pressure gauge on a 2005 Nissan Xterra drop at idle after it's warmed up?
Wiki User
∙ 14y ago
oil pressure normally will go up and down with rms for the most part. when the motor is cold there is more oil pressure as the oil and motor get warmed up the oil thins out and the pressure goes down.
Wiki User
∙ 14y ago
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