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Knocking noise

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Old 10-20-2016, 08:00 AM
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C63s
Knocking noise
hey guys, so yesterday I filled up my tank full at a gas station with 87 octane. After driving for 20 minutes I can notice the engine has been acting very weird. Another 10 minutes goes by and a very faint knocking begins. So I drove back home because I was very worried, haven't started it then. The gas station seemed very out of shape and it was far away from town. So could it be because I filled up my tank with bad gas or the 87 octane? And if I would need to drain the tank, thanks
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Old 10-20-2016, 09:34 AM
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Find a village shop that sells fuel additives and add a couple of cans of "Octane Boost"
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Old 10-20-2016, 01:35 PM
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Originally Posted by Plutoe
Find a village shop that sells fuel additives and add a couple of cans of "Octane Boost"
Yeah! Do that and make sure you never fill with less than 91 Octane.
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Old 10-20-2016, 01:48 PM
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Why would you blatantly ignore the owners manual and fuel door instructions and then wonder why you have an issue?
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Old 10-22-2016, 01:12 PM
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clk and e coupe
its the 87 octane, its not what is required for your car. I would pump it out and refill it
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