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Old Jul 21, 2003 | 10:21 PM
  #1  
GDawgC220's Avatar
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From: Boston
'05 A4 1.8TQM6
Gas

Is there any harm to the engine if Octane 89 was put into a MB versus 91?
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Old Jul 21, 2003 | 11:46 PM
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From: Oregon
C32AMG
NO
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Old Jul 30, 2003 | 06:07 AM
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'00 S320 W220, '98 A160 W168/ sold in 2005 '86 260 E W124 '90 260E W124
Originally posted by Steve Clark
NO

But if you plan on always using lower octane fuel in future, just have the timing readjusted.
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Old Aug 4, 2003 | 09:01 PM
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I personally wouldn't use anything less than 91 unless it was an emergency.
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Old Aug 4, 2003 | 10:24 PM
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1986 560SEL, 97 BMW 740iL
It said premium gas only so I only use premium. A few of gas stations here has 93 rating. The lowest is 92.
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