Fuel grade

If you can get higher octane fuel the vehicle will spend less of it's time running retarded timing as the knock sensor detects the onset of knock. Benz has had a reasonable amount of knocking trouble with the DI engines in variable fuel markets like Egypt & China.
Just thought that the fuel with additives to protect engine was a good idea during running in period.
Last edited by Merlin1; Dec 2, 2014 at 04:33 PM.

If you ever detect any pinging, knock, detonation, pre ignition ~ by whatever name you know it, then reconsider.


