iracemine
I have used the MC 15w40 several years back in my 2002 F350 7.3, no issues at all. I am now using Delo so far so good, truck likes the Delo. Anyway, I think the MC 15w40 is a decent oil and I think it is still made by Conoco-Phillips? The 5 quart jugs make the oil changes a little easier. I think it is a decent oil choice for the money. When I was using the MC 15w40, I couldn't find it anywhere in the 5 quart jugs. The dealers didn't even have the 5 quart jugs only bulk and quart bottles ?? I didn't want to deal with 15 bottles each oil change which is why I stopped using the MC 15w40.