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MINIAC · May 7th, 2008, 05:44 PM

Quote: Originally Posted by Dr. J (original)

yeah I know that while the car *can* run on say, 87, there is a performance hit, but the question is - how much of a difference does it make? If the % cost increase is less than the % MPG increase then it' "worth it" economically. There are other factors like engine health/longevity which are harder to quantify.

Assuming 10 cents difference between grades of gasoline you're saving yourself only $1.30 (89 octane) or $2.60 (87 octane) per 13 gallon fill-up.

Drink one or two less beers between fill-ups and you and your engine will be better off

May 7th, 2008, 05:44 PM	#7
MINIAC MINI Profiler Join Date: Feb 2001 Location: City By The Bay Local Time: 02:00 PM Posts: 8,303 Online	Quote: Originally Posted by Dr. J (original) yeah I know that while the car can run on say, 87, there is a performance hit, but the question is - how much of a difference does it make? If the % cost increase is less than the % MPG increase then it' "worth it" economically. There are other factors like engine health/longevity which are harder to quantify. Assuming 10 cents difference between grades of gasoline you're saving yourself only $1.30 (89 octane) or $2.60 (87 octane) per 13 gallon fill-up. Drink one or two less beers between fill-ups and you and your engine will be better off