Yeah, I use 61 CI per L. I used to be able to multiply and divide in my head much better than I can now, so I keep a dollar store calculator handy to fill in the blanks on the repair function menus. Getting old is a bitch.
If you can, switch it back to miles. This happens a lot with used car lot cars, bought at a auction. When their looking at them before bidding on them. They will switch it to Kilometers to make it look like it has more miles on it. They will also disconnect sensors, to set a check engine light, to make it look like it has a problem. They do this, so when the next person looks at it. He will bid lower, or won't bid at all on it. The problem is the odometer reading, will be off. The auction always records it in miles. So that's the reading the car lot has on file. I've had few of these come back, Because I smogged it, with it in Kilometers. They can't accept it with the millage that far off, so I have to re smog it.