2017 ecoboost
Hi. 2017 ecoboost with the all too common coolant-leaking-into-cylinder-you-need-a-new-engine issue (wtf Ford). Only about 45k miles. Engine light was on when it was diagnosed, off since then. Decided we just need a new car because quotes on a repair or on new engine are too close to the value of this vehicle. So we have been driving it only short distances (no more than 5 miles at a time, usually less) until we can afford the purchase. I know we are gambling here but best we can do at present. Runs ok, engine light still off, but now it gurgles when stopped - I’m told this is likely coolant boiling. Checked the reservoir - there is now no coolant in it, but we worry opening up the system might trigger engine light again and we want to trade this in. Should we add coolant or leave it alone?