is it just possible that 14 lts of coolant at say 50 -60 deg c measures less in volume than it does after several days of cooling down to say 5-10 deg c, in the early days i fell for this myself, i would run it for a while and build up your confidence in the bongo again providing no obvious faults occur, maybe little local journeys initially just in case. some bongos do take a while to settle down to their level, some NEVER sit at the full mark but find there own level, often just between the 2 marks.


