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Thread: Premium Gasoline
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02-11-2011 07:13 PM #1
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02-11-2011 10:40 PM #2
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02-13-2011 07:13 PM #5Registered Member
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Member No: 11493
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Re: suck it up...use Top Tier min.91 octane
if you use regular, you'll burn more fuel cause the engine adjusts for the lower octane. I didn't believe it, 2x I tried regular and burned more fuel & lost the savings. Was about 2-2.5 mpg lower on each tankful. After putting premium 93 octane mpg jumped up 10% like clockwork... amazing'02 325ci 5-speed
'79 Dark Green Vette
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