[talonlover]

The MB brand is 10.00 a gallon around here, probably more in bigger cities. As far as the drain plug goes, there is one in the oil pan. The siphon method is used by many dealerships mainly because it's quicker(no lifting the vehicle in the air) and since there are so many dishonest people looking for an engine there is no way you can blame the dealer for leaving the plug out or loose. As far as oil goes use synthetic oil only in this vehicle. Mobil 1 is the recommended brand and I find the best viscocity is 5w30 year-round. The reason for the viscosity is the 112 engines are prone to oil consumption and this will keep it down to a minimum if any at all. like I said Mobil 1 is the factory recommended brand but Penzoil synthetic meets MB specs and I'm sure there are other synthetics that do to.