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| 01/29/2012 | | | There were formulation changes done to Mobil Delvac 1300 Super 15W-40 in order for the product to meet the performance requirements stated API CJ-4. API CJ-4 is backwards compatible with the previous... |
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| 01/05/2012 | | ZDDP Levels of Mobil Delvac | | What are the current ZDDP levels for Mobil Delvac 15W-40? Is it recommended for classic engines with flat tappet camshafts? |
| | Mobil Delvac 1300 Super 15W-40, which meets API CJ-4 performance standards, has a Phosphorus limit of 0.12 wt%. With respect to your question on slider tappets, Mobil Delvac 1300 Super 15W-40 meets C... |
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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-5/API SN oils desi... |
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| 01/05/2009 | | Was a Dodge Ram Harmed Since CJ-4 Oil Not Used | | I have a 2001 Ram diesel truck with 57,000 miles on it. I've used Mobil 1 15W-50 since it had 500 miles on it. I will be switching to the new 5W-40 turbo diesel truck. Did I do harm to my engine becau... |
| | No. CJ-4 is a certification valid for 2007 and newer engines due to new EPA requirements. You should be fine. |
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| 04/25/2008 | | | Both products have different formulations and both exceed API CJ-4 requirements. Either product, however, can be used in your particular engine. Mobil 1 Turbo Diesel Truck 5W-40 is specifically formul... |
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