No. The valve cover gasket is not under pressure (inside it is just oil draining down). It isn't the oil which blows out the gasket, it is the air pressure. That is nothing to do with high oil pressure, those are two entirely different circuits.
But I don't believe you have high oil pressure. Much more likely that it is a problem with the seal on the oil filter cannister. Do not tighten it with water pump pliers. Use a torque wrench and tighten it properly. And change it every time you change the filter. It doesn't take much torque at all, and too much will just damage the O-ring.
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2007 X3 3.0si, 6 MT, Premium, White
Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
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