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Wrong Gas

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Old Jul 14, 2025 | 06:00 AM
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2015 c300
Wrong Gas

I put the wrong gas in my 2015 C300
if I add octane boosters to the gas I have now will it help?
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Old Jul 14, 2025 | 06:03 AM
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ygmn's Avatar
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2015 E400 Sedan
what gas did you add?
lower octane?

It will survive and adjust timing to suit.

After you drive a bit just add high octane fuel to bring up octane.

Or if you want add your octane booster
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Old Jul 14, 2025 | 06:05 AM
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2015 c300
Thanks for the info

Thanks a lot
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Old Jul 14, 2025 | 08:41 AM
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You will be fine, just drive conservatively. Like the previous poster said, the timing will adjust itself. Top off with supreme gas when you can.

Personally I wouldn’t use the octane boost, who knows what’s in it.
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