I agree, however, there are a million other things one could do to save 30 cents other than getting chincy on the premium fuel. The car calls for premium, so why not give it?

Quit going to starbucks, quit smoking, fast food, candy, etc..

I can go on and on about saving (according to your figures) $12.50 a month.

Risking detonation on my mercedes?. No thanks. If your car does not show detonation at 4+k rpms with 87 octane, your engine is running too rich, and is wasting gas.

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2