What type of gasoline should be used for the Mercedes-Benz GLC?
1 Answers
The Mercedes-Benz GLC requires a minimum of 95-octane gasoline, as recommended in the user manual. Of course, using 98-octane gasoline is also acceptable. Generally, it is not advisable to use gasoline with a lower octane rating than what the manufacturer specifies or recommends. Long-term use of incorrect gasoline octane ratings can have the following effects: Using a higher octane gasoline in a vehicle designed for lower octane will not cause damage, but the increase in octane can alter the fuel's ignition point, leading to delayed combustion in the engine. This results in reduced engine power output and thermal efficiency, with the practical effect being poorer performance. Using lower octane gasoline in a vehicle designed for higher octane can cause engine knocking. This occurs because the significantly lower octane rating reduces the fuel's ignition point, causing premature ignition during the compression stroke. If combustion occurs before the spark plug fires, resistance is created during the upward stroke. This resistance makes the engine run very unevenly. If the knocking is mild, it may only increase noise without significant engine damage. However, noticeable knocking indicates severe engine conditions, affecting not only driving stability but also causing abnormal wear on pistons and cylinders, and in severe cases, cylinder scoring.
