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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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.
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.
