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No. The Check Engine Light is on because there is a problem with the emissions system. The only way that the octane fuel you are using could possibly cause the light to come on is if your car requires the use of premium fuel and you were using regular, but this is highly unlikely. Have the ECU scanned to retrieve the code which will tell you what part is being effected. Most auto parts stores will scan your car for free.

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12y ago

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Does it really matter if you unleaded vs super unleaded gas?

Unless your owners manual says that you must use super unleaded gas, you should just use regular unleaded. Otherwise you are just wasting your money and possibly harming your engine. super unleaded petrol has a higher octain rate than unleaded. check your owners manual for the optimal rate you should be using for the engine.


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