I run 10w-30 in my 2019. I've got over 11,000 miles of towing, and 28,000 miles total with no problems.
I run a 2012 Cummins Ram here in Iowa and use 15W40 year round. Fuel dilution can be a problem in the winter months and bio-diesel doesn't help either. Starting with a higher viscosity gives me comfort. If it's in the manual to use 5W40 or 15W40 then why not use it? I find it is easier to get these viscosity's than 10W30 HDEO.
If it's good enough for the semi's on the road it should work for my truck...
You do realize that all OTR OE manufacturers, Paccar, Freightliner, Navistar, Mack & Volvo, have been using 10w30 as factory fill for 5-8 years, right?
Not a Ford guy here, but I would guess it is because HDEO in a 0w30 or 5w30 are difficult (impossible?) to find and won't carry the Power Stroke approval.OK, I'm dragging up an old thread because this is the closest I could find to the question I have, and I'm not yet allowed to start new threads.
In the table for recommended oil weights for the 6.7 Powerstroke, they suggest 10w-30 for "normal usage," which is down to 0 F. Then, for higher temperatures, they suggest 15w-40. I guess that makes sense because you can get away with 15w given higher low temperatures, and then I figure you can go from -30 to -40 weight because they expect temperatures to exceed 100 F(?).
But the thing that I don't understand is why they stick to the 40 weight for temperatures below 0 F. Instead of 5w-40 or 0w-40, I would have expected 5w-30 or 0w-30. What gives?
View attachment 170619
Because of the MOFT. Starting the engine is only the first step.OK, I'm dragging up an old thread because this is the closest I could find to the question I have, and I'm not yet allowed to start new threads.
In the table for recommended oil weights for the 6.7 Powerstroke, they suggest 10w-30 for "normal usage," which is down to 0 F. Then, for higher temperatures, they suggest 15w-40. I guess that makes sense because you can get away with 15w given higher low temperatures, and then I figure you can go from -30 to -40 weight because they expect temperatures to exceed 100 F(?).
But the thing that I don't understand is why they stick to the 40 weight for temperatures below 0 F. Instead of 5w-40 or 0w-40, I would have expected 5w-30 or 0w-30. What gives?
View attachment 170619
OK, I'm dragging up an old thread because this is the closest I could find to the question I have, and I'm not yet allowed to start new threads.
In the table for recommended oil weights for the 6.7 Powerstroke, they suggest 10w-30 for "normal usage," which is down to 0 F. Then, for higher temperatures, they suggest 15w-40. I guess that makes sense because you can get away with 15w given higher low temperatures, and then I figure you can go from -30 to -40 weight because they expect temperatures to exceed 100 F(?).
But the thing that I don't understand is why they stick to the 40 weight for temperatures below 0 F. Instead of 5w-40 or 0w-40, I would have expected 5w-30 or 0w-30. What gives?
View attachment 170619