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I now own my first 6.0... What's the best oil to run in it... I've been told to ONLY use Ford PSD oil for 6.0 and not to run Rotella (aerates to easily), is this true or BS?

I run Rotella Synthetic in my 7.3 w/o any issues and I know others who use Mobile Syn Diesel oil... Just want to run the best so I get longevity outta the 6.0
 

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I work for navistar and we still get in quite a few vt365s (6.0). We use rotella 15w40 at the dealer as our standard bulk. But have delvac and mobil on the shelf should a customer want it instead.

But we never had any issues at all with aeration with the shell. As long as it is 15w40. A couple of out customers insist on using their synthetic 10w30 they have and they have nothing but issues with icp faults and no start when hot on their trucks with either the vt365 or dt466. Especially the 2010 maxxforce motors. They seem to hate anything but 15w40. Cant control icp when hot.
 
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