I think I am going to try BlueDevil Engine Stop Leak this weekend after doing an oil change. It’s a very thin viscosity additive and it has very good reviews. As I mentioned, I know it’s not a permanent repair and not great for the Vanos but I don’t have time to do the gasket replacements (oil pan, oil filter & cooling housing, crank seals, etc) till this summer in July since it will put the vehicle out of commission for at least a week.