m54 engine

  1. t-tony

    56 plate Z4 - Rocker cover leak

    We had a man drop his 56 plate Z4 2.5 in today complaining of an oil leak which he thought was from the rocker cover gasket. On closer inspection the oil appeared to be running uphill, if it was coming from the gasket. I removed the plastic engine cover and spotted that the new oil around the...