I have a 2016 C7 vert - now 5 YO with 19,800 km on it. Change oil once a year - booked appt. to-day. They suggested - told me because 5 YO now that the brakes are due for service and cooling system due - cost in total for both with taxes around $350+, I guess and oil change $150. My question, I will be ordering a C8 soon and am thinking to leave service other than oil change. Anyone that has technical knowledge about the brakes and cooling system servicing please comment. I am leaning to getting it all done?? He told me mileage not the issue - 5 yr old need the recommended service - no warranty now.