Ah that’s interesting. My oil has been changed recently and looks a bit dirty still. I’m thinking of an oil flush first before messing around with removing the sump to clean it. I’m getting weird oil pressure light issues. Sensor changed, pressure check ok at 70psi but light flickers between 1st and 3rd under load but 4th and 5th, no issue even under load. Thinking sludge or a wire earthing somewhere!