Posted by Jon Hagen on January 01, 2011 at 08:42:47 from (69.26.23.96):
In Reply to: Re: 15-40 VS 5-30 posted by rustred on January 01, 2011 at 08:32:12:
Besides the oil being thicker than recommended, the 15-40 diesel oil may still have fairly high level of ZDDP extreme pressure additive.
This additive is good for the engine internals, but bad for gas engine emission systems.
If you have emissions warrenty problems and they find that the oil fouled a sensor, cat converter or whatever, they might deny coverage because of the wrong oil.
Check the API oil spec in your operators manual and the one on the oil jug to see if they allow that spec oil in a 6L engine.
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