Oil moves to greasing places under pressure. However too the high pressure, for example at cold or dense oil, can become the reason of damage of the engine at long influence. To it counteracts редукционный the valve (on a bypass way), located on a flange of the case of the oil filter. It opens at pressure 400 кПа and returns oil in soaking up cavity of the oil pump. At the serviceable oil pump engine oil moves to greasing places at pressure 1500—2500 кПа, temperature 80—100 With (the data for universal oil SAE 10W-30). On single turns pressure makes 60—100 кПа.