I live in southern Spain and I just bought a 1993 525 tds, with 140,000 km on it. The car is beautiful, I love it!!!! Can someone please recommend what type of engine oil I should be using for my next oil change. And also, I have changed the glow plugs and when the engine is cold and the coil light switches on, the engine starts very well, but when its hot and the coil light does not come on, then I need to turn the starter quite a bit to fire up the engine. Is that normal in this car?