Sure my water level /coolant was higher to the half way point and now it's on the first line of the two marks, What's it mean if it uses water? I mean I do give it some beans quite a lot but

Check the car at the same temperature. It can go up and down a bit just with temperature.

 

I had to top up my Octy occasionally between coolant changes but only by a little and not often (like once in 2yr).

 

Check the oil filler cap to see if there is a lot of coffee colour crud, a little bit isn't an issue.

Also check the expansion tank for a scum of oil.

They would point at a head gasket.

 

If you don't have either of those things then it's maybe just a little vapour leak in the expansion tank, a drip at the pump or a leak in the radiator.

No grubby in the oil, expansion bottle is fine,

water leak from water housing on the battery end of the block.

 

or leaky rad... i know mine is leaking.. but its £300 to replace:\