[reitanqild]

I guess anyone who knows what Swedish mil is will specify kilometres instead.

I cannot remember a single time I have seen a contract specifying mil instead of km.

("Mil" == 10km == 10 000m is used here as well only not in formal or scientific contexts that I can think of but maybe that is a difference between Sweden and here.)

[einhverfr]

My car lease (in Sweden) is in Swedish miles.

2000 miles (i.e. 20k km).