An engine with a high compression ratio requires high-octane fuel. Or to be on the safer side, the driver can follow the manufacturer’s recommendations listed in the vehicle handbook.
For example, the Toyota Kijang Innova Zenix, which has an engine compression ratio of 13.0:1, requires fuel with a minimum octane rating of 91. Even though the engine compression ratio is relatively high, technical support of PT Toyota Astra Motor chief dealer Didi Ahadi explained that the minimum octane requirements for the Kijang Innova Zenix are octane 91.
Since 91 octane fuel is not available in Indonesia, the recommendation for suitable fuel is at least RON 92. For types there are Pertamax, Shell Super, Revvo 92 and BP 92. Do not despair of using lower octane fuel , such as Pertalite or Revvo 90 due to risk to engine performance.
“If it is lower, there is a risk of accumulation of carbon deposits, exhaust emissions and performance (applies to petrol and hybrid),” Didi explained when confirmed by detik.com.
Yes, using BBM with lower specs than recommended will have its impact. As explained by Didi, this risk includes a decrease in the quality of the exhaust emissions.
For example, if the car’s performance is more spontaneous, it may be that using fuel below the recommendation actually gets slower because it has a different fuel point. Hence, the potential carbon buildup in the piston combustion chamber and cylinder walls can also occur.
On the other hand, filling up with fuel according to the manufacturer’s recommendations will not make the driver lose money. Proper fuel will help increase engine efficiency, which translates into fuel economy. Power that matches the engine’s specification also means you don’t have to press the accelerator pedal, wasting fuel. The condition of the machine being maintained makes it last longer, so it is easy to maintain.
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