Mobil 1 is a great oil. I use it in my turbo (Porsche) where high temps torture conventional oils. With Mobil 1 being a synthetic you can generally extend the interval between oil changes as the base oil and additives are of a higher grade. That said, it is expensive $50 oil changes for my turbo and $4.25 a quart. I use conventional oil (Valvoline) and frequent changes for all my other cars, M.B. included. Synthetics, due to their flow characteristics, tend to leak greater amounts from any small leak you may have. If you can afford it, you can not go wrong with Mobil 1. Mr. T.