i have a 94 E420 with 42K miles. i don't know what the previous owner was using, but since i had a car at 39K miles, i am using synthetic.
i think newer benzes have an indicator that tells the owner when to change the oil. mine doesn't. so, should i change the oil every 3K miles? i've never owned a mercedes before so i don't know if it's any different. also, i've never owned a V8. does that make any difference?