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Old 05-17-2012, 07:07 PM   #81 (permalink)
Shamrock
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Join Date: Apr 2012
Location: Israel
Posts: 215
Drives: 370z 2011 AT White
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Purist is saying to go back to 5w30. He's saying that because he believes it's better for the z. I don't understand why it's better. I don't understand why there is less valve train noise with the 5W30. All I want is what's best for the car.
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