More re '97 E320 Oil Change
Once belly pan is off, requires 10 mm wrench, I think, the plug is quite obvious on the driver's side of the pan. I always buy filter from the dealer and he gives me the washer for the plug. A little oil will remain in pan because of ramp use but with frequent oil and filter change plus having oil hot and thin when I change it, that is no big deal. I'm in St. Louis, have always used Pennzoil 5W30 in my cars and have never had an engine problem or an oil burner on several cars with more than 85K miles. I change the Benz every 3-3.5 K miles. After al is done, i take the old oil to Autozone which gladly accepts it with a smile. Good luck!