Can anyone state conclusively the sump capacity of a C240?

Yesterday I had the 45,000 Km service done and once again confusion ensued regarding how much oil to put in the car. Dealer spec states 7.5 litres for my VIN number. My Owner's Manual states 8 litres with filter for C240 and 7.5 litres for C240 4 matic.
Elsewhere in these forums the same question has arisen in another thread with no conclusion. In fact a scan of the Capacities page of an earlier Owner's Manual is included stating 7 litres for the 4 matic & 7.5 litres for the RWD.
Does anybody have a definitive answer to this? Did the sump capacity change at some time during production of the W203 series?
Any clarification by your esteemed members would be much appreciated
Regards



The way I refill is to hold back one liter, give the car a few minutes idle (whilst looking for leaks about the filter housing.) then shut off for five minutes and use the workshop dipstick to measure the oil level. I then add as necessary. My C240 usually takes 8 quarts, but has taken an additional cup to meet the dimension specified in the WIS for my VIN. I then double check using the electronic sensor.

Last edited by Glyn M Ruck; Jun 16, 2008 at 06:15 PM.



Mercedes uses large sumps to allow better cooling of the oil and the bottom of the engine. The additive package in the specified oil (only Mobil 1 0W-40 in the US is easily found) and the fleece (polyester) oil filter allow the 1 yr or 13,000 mile change interval. The sheet 229.5 oils have a larger additive package than other synthetics.


So far my investigation tells me that WIS capacity stated at 7.5 litres is sump only and that Owners Manual 8 litres is inclusive of filter. This information comes from one of DBs best service managers that has just moved to Bentley. It sounds feasible but I remain unconvinced



