The oil quantity in the engine is reduced. Is this a problem?

The allowable normal flow rate of oil in up-to-date engines is up to 0.5 l per 1,000 km. The oil flow rate rate in previous engines is considerably higher. This may result in wear of piston rings or crankshaft seals. In addition, the oil flow rate may change depending on season: it is lower in winter than in summer when the engine runs hot.