Synthetic oil change-over
My big question is when is a good time or mileage to switch over to synthetic? i have heard many different mileages/times. Any good thoughts? I currently have 13000 miles on my C-7 pulling a heavy ra...
Forum Discussion
RVUSA wrote:donn0128 wrote:
Corvette's come from the factory with full synthetic, so I see no reason not to right now.
corvettes come with a much different cylinder honing.
Without a diamond braded honing in the cylinder running a synthetic before the peaks have been worn down by the rings oil will get caught in the valleys and coke up there from the combustion temperature as the piston goes down. It can and usually does cause the cylinder to become almost ice smooth and oil burning and loss of power comes right behind it.
Shoot an email to Cummins and ask them when the best time is. They built the motor, they'll know the right answer.
Sorry, but plateau honing (knocks the peaks off) has been in common practice at the OEM level for at least 30 years. Blame (or credit) EPA standards and mpg standards for that.
