Originally Posted By: A310
I haven't been following what ford says and been using the new Rotella T6 5W40 in my 6.4 with no problems. Mind you I've only added 2 quarts so far to a 20 quart system, but I'm confident that it will be fine. I've been running Shell oil in all my cars and trucks for over 30 years and have never had any issues to date. I'm sure Ford will come around and include it in their approved list.
That engine the 6.4L was made by Navistar , which they never objected to the use of CK-4. Ford did appear to indicate that a problem could be with there Scorpion engine and then make a blanket statement on all Power Strokes. Very suspicious on there proprietary test.
I haven't been following what ford says and been using the new Rotella T6 5W40 in my 6.4 with no problems. Mind you I've only added 2 quarts so far to a 20 quart system, but I'm confident that it will be fine. I've been running Shell oil in all my cars and trucks for over 30 years and have never had any issues to date. I'm sure Ford will come around and include it in their approved list.
That engine the 6.4L was made by Navistar , which they never objected to the use of CK-4. Ford did appear to indicate that a problem could be with there Scorpion engine and then make a blanket statement on all Power Strokes. Very suspicious on there proprietary test.
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