Can I use Delo 400LE 15w-40 in my new 2011 F250 6.7 diesel? OEM is Motocraft 10w-30. The delo says it is CJ-4/SM. Which ford recommends. I used to use it in my 2000 - 7.3 and my 2005 - 6.0 and had no problems. Just wanted to make sure this new 2011 - 6.7 does not need only a specific OEM oil. Any info would be great Thanks