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Old 08-01-2011, 11:43 PM   #1
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What determines proper engine oil

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.

rest of story
ZDDP Oil Issues

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

2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"
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Old 08-02-2011, 09:57 PM   #3
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Originally Posted by Ray,IN View Post
Are you asking a question?
Just passing on info.
P30, 454 ENG, TURBO 400 TRANS
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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.
2014 American Eagle 45T
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Pulling a Honda CRV
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