I am coming up on 5 years with my 2016 at the end of the month with 25k on the odometer.
I am now with renewed Coolant, DOT3 Brake fluid, Rear Diff fluid and "Red Cherry" (new inside joke) A8 Mobil 1 Transmission fluid.
Although trans pan gasket can be reused, we replaced with a new gasket & did the filter too - as we had the pan off.
All performed over 2 Sundays with a known very knowledgeable and tool-equipped Corvette Comrade in Edmonton.
An awesome friend and this was absolutely great non-driving Corvette "fun".
I drive away a little lighter in the back pocket and seeing & knowing everything that was removed, was reinstalled and torqued to specification.
Much better overall experience than worrying about who is doing it at a dealership ... (perhaps just me when thinking this).
We actually found a few misc things that needed to be remedied while it was noticed - I was surprised by what was found.
Although I never had the C7-A8 shudder issue ... I do notice the A8 shifting difference now that I have just over 6 liters of Mobil 1 trans fluid added in it ... sweet.
I also experienced a no-start event between the 2 Sundays with just "click-click-click" and the driver door not being able to close because the window was fully up.
I plugged in my Schumacher Maintainer and it displayed "charging 6V" across the screen ... so New Battery replacement.
I was surprised how quick that battery died after driving the previous day.
Wow ... whatta chore to remove the battery but knuckles heal.
I am now good to go on a day cruise with the '21RMCC in a few weeks.
Looks like I have a "to-do" list to be on top of for the upcoming 5th year of our "not his" 2017-C7.
a few pics …. for those who just like to look at photos (sorry no damaged knuckles photo)