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 | 04/06/2010 | | | From an engine performance viewpoint, the API CJ-4 oil should provide adequate protection. But this heavy-duty viscosity grade has a higher level of phosphorus than typical ILSAC GF-4/API SM oils desi... |
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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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| 01/04/2008 | | | We have no information that the level of phosphorus in Mobil 1 Racing 4T is going to significantly shorten the life of your catalytic converter. Catalyst poisoning from Phosphorus is a well known issu... |
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| 05/25/2007 | | Has Zinc Been Removed from Motor Oils? | | I am having thrust bearing failure in a 4.6 modified performance engine. This is a street/strip engine. Many of my friends are having the same problem. I think it is the result of the removal of zinc ... |
| | The active ingredient that you are talking about is phosphorus which is added thru a component called ZDDP. For products that meet the new ILSAC GF-4 specification the phosphorus levels for the oil mu... |
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| 12/14/2006 | | Using 0W-40 Motor Oil Instead of 5W-20 | | I have a 2004 Honda Accord 2.4L that I recently installed 0W-40 in although Honda recommends 5W-20. With regard to engineering tolerances, I'm skeptical that there could be much difference between Mer... |
| | In general we recommend that you follow the OEM recommended viscosity grade, especially during the warranty period. Although, we think there is very little chance that you will have any issues using M... |
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