On Sun, 20 Nov 2005 23:06:07 +0000, tony sayer
wrote:

Do the oil change and you'll have caught it in time.

If she had run the engine would this have harmed it at all?.

It could easily do so if "running" the engine had involved high rpm or
high load. A litre is a large proportion of the total, raw antifreeze
won't boil off as quickly as diluted coolant and it's certainly not a
good lubricant.

I've no idea what a Mondeo sump looks like, but there are some engines
where it's difficult to get a good clean drain of the last dregs in the
sump. Make sure the car is tilted the right way (jacking or blocking one
end if needed)