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Checking the oil in a C300 is fairly easy and should be done once a month. Note that most Mercedes-Benz have an oil pressure gauge next to the speedometer - this gauge does not tell you what your oil level is, however the video above will show you how check the oil level in your 2009 Mercedes-Benz C300. Make sure your engine is cold when you check the oil in your C300. Otherwise the dipstick will read slightly low. In addition to checking the oil level, you also want to look at the condition of the oil when you have the dipstick out. If the oil in your C300 is dirty or smells like gasoline, you probably need an oil change.
If you notice that the oil level in your C300 is extremely low or empty, fill it up and check it again the next time you drive. If it is extremely low again, have your mechanic take a look before driving it much more.
If your battery has green or white cruddy deposits, it is probably not getting enough juice from and will likely wear out sooner2009 Mercedes-Benz C300 Sport 3.0L V6
Replacing a dirty air filter can improve gas mileage by up to 4%. Isn't efficiency great?2009 Mercedes-Benz C300 Sport 3.0L V6
A/C blowing hot air?2013 Mercedes-Benz C300 4Matic Sport 3.5L V6
Small bulbs that burn out regularly - did you know you can replace these with LED lights?2009 Mercedes-Benz C300 Sport 3.0L V6
Stop! Checking your brake fluid from time to time is a great way to ensure safe stopping2009 Mercedes-Benz C300 Sport 3.0L V6
If your brake fluid is a little low, learn how to add some here. Ignoring a low level leads to big problems2009 Mercedes-Benz C300 Sport 3.0L V6