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What determines proper engine oil
Old 08-01-2011, 11:43 PM   #1
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Choosing oil that reduces wear.

About a year ago I read about the reduction of zinc dithiophosphate (ZDDP) in the oils supplied with API approval that could affect sliding and high pressure (EP) friction in our cars. (excessive wear on camshafts lifters ertc)

The reasoning for the reduction of zinc, manganese and/or phosphates is that they reduce the effectiveness of and eventually damage catalytic converters and introduce minute amounts of pollutants into our atmosphere.

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ZDDP Oil Issues

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Old 08-02-2011, 08:59 PM   #2
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Are you asking a question?

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Old 08-02-2011, 09:57 PM   #3
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Quote:
Originally Posted by Ray,IN View Post
Are you asking a question?
Just passing on info.
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Old 08-03-2011, 11:37 AM   #4
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The "proper oil" is the oil that meets the specs the manufacture says to use.
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