i have to disagree entirely.....the chemistry of a diesel-specific motor oil has nothing to do with the chemistry requirements of a gasoline engine.....use Castrol 10w-40wt if u want to use a conventional petroleum oil......thats what my father always used in his Mercedes repair shop, in all the gasoline cars....
all my customers i put AMSOIL 5w-40wt European Car Formula into their gasoline cars.....it is specificly tailored to the additive requirements of high performance european engines.....put it into a 1977 280SE with a m110 the other day, after its first good flush in it's life......quieted it WAAAAY down, valvetrain noises almost completely dissappated, and the motor is smoother and more powerful, and she even called a week later to say that she got about 50 miles more out of her full tank.......so she's happy, i'm happy she's happy, the car is happy too, thats just how it is....
