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
wolfe10 wrote:
Jeff,
Were it me, first question is what oil has been used in the past.
If either Delo 400 15-40 or Shell Rotella T 15-40, THAT would be my choice.
If not, choose one and stick with it. I would not go synthetic, particularly if you are contemplating going back to dino.
I have used both over the years-- depending on what the previous owner used. Current coach Shell Rotella T 15-40. Last one Delo 400 15-40.
Boat Shell Rotella T 15-40 because it is available outside the U.S. where we take the boat.
Wolfe,
Can I ask what the reason to stick with the same oil is?
Jeff
