Cat C-7 diesel oil viscosity
I have a 2004 Cat C-7 in a 36' Meridian which I have been using Rotella 15W-40 oil in it since new 68,000 miles back. Seems I remember reading somewhere the thought was that 10W-30 was better for the...
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That would be ~10K miles (averaging 8.5MPG) in the truck I drive...but I wonder if the pan is larger. (IIRC, the truck I drive holds 6.5 gallons of oil.)
Does it list an interval for miles or engine hours?
Does it list an interval for miles or engine hours?
