c 280 leaking oil
 

i have a 2000 c280 sport, I purchased it about 2 months ago. I did my first oil change by sucking it out of the dipstick, replaced the filter and filled my new oil 10w30 mobile one. the next day there is a puddle of oil where the car was. I chked it tonight and it looked like it might of leaked through the oil filter cap, so I tightened it more. could it be anything else? it didn't leak a bit before i changed the oil.

Perhaps oil spilled over the side as you poured the oil in (?). As you likely know, the oil cap is elevated off the valve cover so when I changed the oil in my 98' C280 I removed the engine cover to better see that area and to quickly clean up any oil that did spill. If you did spill some oil there, it may take a while for it to flow down the side of the engine.

When you removed the oil, did you measure the amount removed to ensure you got most of it? If not, do you think you may not have removed all of the oil and then subsequently over filled the engine?
MarkC

Pull the cover off of the engine. Just pull straight up at each corner. (Make sure all the rubber goodies are in place when you replace it.) You'll see the oil filler cap attaches to a plastic filler neck. Very common for the filler neck to get leaky at the bottom where it seals to the valve cover. It is easily removed by turning, just like the filler cap, after releasing the small lock tab on the driver's side. Replace the gaskets for the cap and the neck. I think you can buy them from Fastlane.
Good Luck, Dan

thanks for your help, I tighted the filter cap and it seems to have stopped leaking, I think It might of spilled on the pour. I used a funnel but it probably went out the sides! thanks again.