 | Date | Question |  | Answer |
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 | 01/12/2010 | |  | Mobil 1 0W-40 is an outstanding product, and with the 40 grade high temperature viscosity it can help control oil consumption in higher mileage vehicles. As far as the higher phosphorus content and it... |
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 | 10/06/2009 | |  | The short answer is yes. Mobil 1 5W-50 has a higher level of phosphorus (zinc) preferred for older sliding valve trains in higher performance vehicles. |
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 | 05/05/2008 | | What's the Zinc Level Mobil 1 15W-50? | | Hello, I read your answer about ZDDP and phosphorus levels. You even list the phosphorus level in your table, but you show no listing for the level of zinc. Other oil companies also list their zinc le... |
|  | The important element here is the phosphorus since it is the active antiwear additive. That's why we show phosphorus as well as zinc. The zinc content is in the range of 0.12 - 0.13 weight percent (... |
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 | 10/15/2007 | | What to Use for Camshaft Break-in | | I am an engine parts wholesaler and my customers are having trouble with camshaft break-in now that the zinc has been removed from the motor oil. I've been selling EOS & comp cams break-in lube but th... |
|  | We have a number of products with higher levels of phosphorus. Please refer to the attached table listing the phosphorous levels in our motor oils. |
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