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...
Forum Discussion
jauguston wrote:
Jarlaxle,
Unless you can post a link to what you recall I would say your recollection is wrong. Those numbers would be harmful to a C-7. My C-7 Operators manual says change when 1100 gallons of fuel are burned. On a typical C-7 that will be "about" 7500 miles. The manual is a engine manual and does not specify what the application is. If you do other than what CAT recommends don't come badmouthing them if you have engine failure.
Jim
what I found?
Cat c7 350 hp oil change intervals
28L(30 quart) 15000 miles
21L(22 quart) 11000 miles
