Oil filter is tight and seated properly, drain plug is secure and no leakage- have had some oil smell while driving the past week or so- pulled into home and oil smoke pouring out of engine compartment and lots of oil splattered covering undercarriage, oil level below dipstick check ( was proper level when checked one week ago)

hi, do you see oil on ground when you park? - could be oil drain plug is not put on properly- also, do you see blue smoke coming from tail pipes?- could be bad piston rings---- look for ooil in engine bay -look down and see if leaking- that's a lot of oil to lose- keep an eye on oil level every time you start the car to avoid severe engine damage!!!- put oil as you need until fixed- happy trails!!

If you have to ask, I wouldn't suggest doing it yourself. It is easy, common sense, but you have to have common knowledge first about car maintenance and proper oil and filter, making sure you are careful when draining oil into proper container, putting drain plug back on without stripping threads, making sure it is tight, replace filter taking the same care, then filling with proper oil and proper amount, checking for leaks before driving, then rechecking oil dip stick level.

Good luck

If you have more than 100,000 miles, go for the High Mileage oil. If has the additives you need. I suggest you buy an oil filter tool while at the store to make sure you get the right size. Jack the front of your eldo on the passenger side or drive the car up on ramps. Make sure it is secure. Open the hood and remove the oil filler cap. Crawl under the car and take your 14MM or 15mm socket and ratchet, your new oil filter and filter tool with you. Remove the oil drain plug located on the rear of the oil pan. Make sure you catch the oil in a drain pan to be disposed of properly. The oil filter is located underneath on the front of the engine. After the oil has drained completely from the oil pan, replace the drain plug. Make sure it is tight but be careful not to over tighten. Remove the oil filter. Hint: take a plastic bag you used to bring the supplies home to help capture the old filter and the oil that is prone to spill. Dip a finger in the old oil and lubicate the rubber o-ring attached to the top of the NEW oil filter. This helps the filter to seat and to be tightened properly. Hand Tighten the new filter in place and wipe up any spills. Remove the old oil, filter, and tools and exit to the top side. Using a funnel, pour five quarts of oil into the oil openning. Remove and wipe the end of the dip stick and reinsert into the dipstick tube. Remove the dipstick and read the level. It should be just under a quart low. Replace the oil cap and the dipstick. Lower the vehicle to it's normal position. If you had the car on ramps, you'll have to start the engine to get it down. At any rate once the car is lowered, start the engine and check for leaks underneath.If you have leaks, you'll need to tighten or repair the cause of the leak. If there are no leaks, shut off the engine and remove the dipstick to re-check the oil level. You will probably need to add the sixth quart to get the crankcase full. DO NOT OVER FILL.

most dealers will reset oil life indicator but other auto shops dont ,they usually advise u to, ur owners manual can tell u how to reset it as for mechanical trouble light on u need to have vehicle scanned auto stores such as auto zone--advanced auto do it for free-problem could be connected to ur oil change

1. Warm the engine up, Remove the Drain plug and drain oil out (Drain plug is on the drivers side of the pan).
2. When oil is done draining replace the drain plug and install a new crush seal (silvery washer on drain plug)
3. Next you will need a Oil filter socket. Use the oil filter socket with a 3/8 drive ratchet with a 6 inch extension, remove the filter, it will be full of oil.
4. Use fresh motor oil and coat the gasket on the new filter and install. tighten filter 1.5 turns past hand tight.
5. Refill the engine with 5w-30 Conventional oil. (start with 4 quarts than check the dipstick) Subaru recomends havoline as this is what they come with from the factory.
6. Wipe up any oil that may have spilled on the exhaust cross over pipe.
7. Start engine check for oil pressure and leaks.

The dealer will usually charge double with it would cost for you to buy the oils and do it yourself because of the labor involved....

This only applies to 2001-2005 (I-4 supercharged engines) or w203 chasis. It might be the similar for other C-class models.

Tools Needed:
1. 27 mm socket or a cresent wrench
2. Small flat head screwdriver
3. Funnel
4. 8mm socket *
5. 1/2 inch socket *
6. Lift Jack*
7. Oil collection pan*

* Optional tools, only needed if you plan to drain the oil. If you **** the oil out these tools are not needed.


Parts/Supplies Needed:
1. Oil Filter (MB Part # A 271 180 00 09). My dealer provided a new drain plug washer the filter.
2. Oil (Mobile One 0-40) C230 (I4 SC) needs 5.8-6.0 quarts.


Procedure:
1. Locate the oil filter and slightly loosen it, DO NOT remove it at this time. This will allow the oil in the filter to flow back to the oil pan. (See Photos 1 &2 below)
2. Jack up the car and remove plastic engine covers on the bottom of the car with 8mm socket.**
3. Located oil pan drain plug and remove plug with 1/2" socket (See Photo 3 below) Make sure you have the oil collection pan under drain, because the oil will come flowing out fast.**
4. As the oil is draining out, remove the oil filter from engine bay.
5. Remove oil filter cartridge (this may take a little force) and three rubber o-rings. Replace oil filter cartridge and replace the three o-rings (See Photo 4 below) Coat the new o-rings with some new oil.
6. Install drain plug with new washer and tighten to the proper torque spec (24N/m) or 1/2 turn past finger tight.
7. Install oil filter into engine bay. DO NOT over tighten! Tight to the proper torque spec (24 N/m) or if you do NOT have a torque wrench tight a 1/4 turn past hand tight.
8. Remove oil cap and input 5.25 quarts of oil using the funnel. (The reason why you should NOT add the entire 5.8 quarts is because there is still some residual oil in the engine and it's not good to over fill. You can easly add oil, pain to take it out)
9. After putting in 5.25 qts, turn ignition key to position 2 (radio and heater/AC comes on) for 10 seconds. This will allow the oil pump to start pumping the oil into the empty filter. Then start the engine and let it run for one minute and turn off car and remove key.
10. Re-Intsall plastic engine covers on the bottom of the car with 8mm socket and lower jack(s). **

It is in the bottom of the oil pan. The oil pan is the bottom most part of the engine. it looks like a pan.

Probably a leaking fuel injector. Pull the spark plugs and see which plug is dark and wet and smells of fresh fuel. That cylinder's fuel injector should be pulled and checked for leakage. Gas will drip from the injector and seep past the piston rings where it ends up in the crankcase and dilutes the oil.

Does the oil have a strong smell? It sounds like it is your front differential and it may be that the lube center overfilled it during their routine. Take it back and see. If they have see if they can take a bit out.

Where is the oil going? Is there evidence of leakage on the ground after parking overnight? My guess is that the garage did not tighten the drain plug or oil filter properly, causing it to leak out.
A knocking noise indicates serious damage to the engine, due to insufficient lubrication. The noise u hear is probably a bad crankshaft or connecting rod bearing. If this was due to improper tightening of the drain plug or filter, the garage is responsible (but good luck trying to get them to fix it). This is why I never let anyone change my oil/filter.