Engine voice

Asked by Jul 20, 2017 at 04:24 PM about the 2013 Mercedes-Benz C-Class C 300 4MATIC

Question type: Maintenance & Repair

I bought a new mercedes c300 4matic 2013 and it
is my first time i own a car in my life
I didn't know about the gas types so i used the
regular gas for one week and after the cashier guy
told me that i have to use premium
Now the car start making a knocking noise what is
the probleme ? And how much it is gonna coast ?
And how about the fuel systeme cleaner can i uset
?

2 Answers

890

Yes, this is a very high performance car and will run better on premium fuel but it will adjust to run okay on regular fuel with no harm done. Puzzles me you would hear engine knock at all due to the grade of fuel. These engines have a knock sensor that retards spark so there is no fuel knock. Mean time, run premium, check your engine oil level and show it to your mechanic and see what he hears.

How about the fuel systeme cleaner ? Because i'v heard that it will clean the engine

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