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Using 5W-40 on Z's with no oil cooler

I received advice from a tuning shop to run 5W-40 oil as opposed to the 5W-30 since I don't have an oil cooler. They said the heavier will absorb the

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Using 5W-40 on Z's with no oil cooler

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07-24-2010, 12:14 AM	#1 (permalink)
Zeto Track Member Join Date: Apr 2009 Location: North NJ Age: 40 Posts: 766 Drives: 09 Pearl White 370Z Rep Power: 267	Using 5W-40 on Z's with no oil cooler I received advice from a tuning shop to run 5W-40 oil as opposed to the 5W-30 since I don't have an oil cooler. They said the heavier will absorb the heat better and the heat will break down the 5W-40 viscosity to a lower weight. Is there any truth in this?

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