Hello, after my Subaru Brat got new head seals on its EA81 engine, the oil belly has increased from 1litre to 1000KM to about 3litres per 1000KM…. The oil has remained the same viscosity (10w40) and also 15W40 does not reduce consumption noticeably What can have gone wrong? I can’t really discover a connection, except that a ventilation may be tight and the engine may build up too high pressure in the crankcase. Who has an idea? Driving is not really funny … Maybe even interesting : During the last workshop stay, besides the head seals, the spark plugs and the interrupter contact were also changed. Since then it also starts much worse and you have the feeling that he also has a few ignition triggers from time to time Gruss Norbert