Basically the mechanic will fill in with fluid until it reached the fill plug hole level. At this point any extra oil you add will come out by the fill plug. This is also the reason why to add the extra 2 liters for track use, you need to fill in by another plug on top of the transmission which...
I went to Boisvert Chevrolet which I had good service for engine oil change, transmission oil and filter change on my 2021 C8. I asked if there mechanics have been trained on the C8 and said yes... So give them a call: Véhicules neufs et occasion à Blainville | Boisvert Chevrolet Buick GMC...
Outside of Montreal is even better... always looking to meet C8 owners... since none of my families or friends owns a corvette... I am the black sheep.
Yesterday, I did my DCT filter and oil change. Doing the oil change is a pain because they cannot plug there usual machine. It needs to be drained like engine oil and then filled manually liter by liter with a big syringe thru the left rear tire opening (need to remove the wheel). Then plug...
Transmission oil must be changed every 3 years
Transmission filter at 12000km and then at 36000km
Engine coolant every 5 years
Brake fluid every 5 years
Engine oil every year
Cabinet filter every 2 years
Engine filter every 3-4 years
All of those maintenance are included in the pre-paid...