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  #1  
Old 03-23-2011, 08:30 AM
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RHONDAS RHONDAS is offline
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Default Thickest weight used in 2003 v6 engine

in my owners manual it says to use 5x30 or 10x30 or 10x40 weight oil non synthetic only regular motor oil , I have a wix new oil filter and want to use the thickest oil I can ,has anyone ever tried 15x 40 weight? in a 2003 pathfinder v6 vq35de engine.
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Old 03-24-2011, 07:44 PM
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Why you want to use the thickest oil? thicker oil may damage the engine and decrease MPG. I wouldn't go over the 10x40.
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Old 03-24-2011, 08:00 PM
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Default oil weight

thanks for the answer, what would be better to use for the timing chain tensioners to stay in good operating condition a 5x30 or a 10x30 oil ?
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Old 03-24-2011, 09:09 PM
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Probably 10W-30. It all depends how well you have maintain your Pathfinder and how many miles.

If the vehicle is well maintain (oil change every 3750 miles) and low miles, you can use 5W-30.
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Old 03-25-2011, 12:58 AM
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I have 68,000 miles on the engine and I have changed the oil and filter every 3500 miles , I see they now have ols for SUV'S and Higher mileage engine oils , what about useing them in a 10x 30 weight ?
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