Wrong Gas
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2009 Iridium Silver C63
Wrong Gas
I left my buddy at the pump while I ran in to grab some brews and when I came out, he had already pumped about 12 gallons of 89 octane gas by mistake. I had about a 1/4 tank of premium in there already and was able to pump about 2 gallons of fresh premium but that's all I could get it. Will burning this gas off cause any damage or should I have it drained?
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2009 c63, 2010 E63
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AMG & RR
Slightly Off Topic - Excuse me but isn't 93min required for the C63 guys?
OP don't worry about the low octane, if you have been running on 91, its still less than what is required anyway, just don't make the mistake of putting low octane again.
OP don't worry about the low octane, if you have been running on 91, its still less than what is required anyway, just don't make the mistake of putting low octane again.
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2010 Irridium Silver MB C63 AMG Sedan
Absolutely nothing will happen. This would not affect the engine if not repeated. Higher octane number will reduce residues and build-up and all the debris from lower octane, and powers higher performance engines. You mixed it, it will be fine. Do not do it again...
Last edited by ZephyrAMG; Dec 28, 2009 at 11:06 PM.
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C63 AMG Arctic w/ Stage 1 Tune, DoubleXX pipe, MCD-631X coming soon
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Forget about it, your ecu will adjust.
The high octane gas is used by the manufacturers to get better fleet mpg's and higher performance numbers.
You might (or might not) notice slightly lower performance and maybe 5 to 10% lower mileage but otherwise, it's a wash.
The high octane gas is used by the manufacturers to get better fleet mpg's and higher performance numbers.
You might (or might not) notice slightly lower performance and maybe 5 to 10% lower mileage but otherwise, it's a wash.
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2012 E350 4matic
my nissan reccomends 91 or better and for the past 5 years and 100k miles i have ONLY ran 87 octane. no issues. its not a super high performance engine and i do use 91 in the C but you are going to be fine. just drive it normal and fill it about half way empty with 91 and forget about it.
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I guess the only way to keep the Octane level high enough would be Octane Boosters. I am still learning about my C63 and just like any car, lower octane would mean engine problems in the long run. Knowing that 91 is more common in the U.S., Amg should have modified it for the U.S. market.
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C63 AMG
I guess the only way to keep the Octane level high enough would be Octane Boosters. I am still learning about my C63 and just like any car, lower octane would mean engine problems in the long run. Knowing that 91 is more common in the U.S., Amg should have modified it for the U.S. market.
Last edited by bhamg; Jan 1, 2010 at 06:22 PM.
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From: Palos Verdes
'09 C63
I guess the only way to keep the Octane level high enough would be Octane Boosters. I am still learning about my C63 and just like any car, lower octane would mean engine problems in the long run. Knowing that 91 is more common in the U.S., Amg should have modified it for the U.S. market.
