three months or 5000 kms whichever comes first
Change oil every three months
It is usually 9 months
You should change your oil every 3 months or 3,000 miles.
If it's a C Class(W202) then it's 12 months or 9000 miles
3000
If you want to keep the engine clean and long life, 3,000 miles for oil changes ( 5,000kms) and 10w40 is good.
Oil leak or the engine is burning oil.
I would recommend at least every 75,000 miles.
I try to change it every 3 months, but when I do they tell me it was bone dry, so either change it every 2 months, or just put a bottle of general quaker state in your engine in between oil changes. make sure you keep up with the oil changes, cause if you do that car will last your 20 years+
About 4500 miles for car/truck over 150k
10.000 km
6 months