Hmm, maybe I'll spring for 89 next fill up.89 is yielding better fuel economy and more power according to my butt dyno then 87 did. There was a lot more hesitation with 87 and made the sluggish transmission feel even worse due to the hesitation
• 10¢/gallonIt's 10cents more, on a 15 gallon tank is a mere $1.50 per tank (which is less then 1 gallon of 87). the price difference is negligible really - I use about 1.5 tanks per week, so I might spend about $1.75-$2.00 extra each week (to compare, I spent more on soda in 1 day).
There is always a price difference of $.10 so that's not just "current" prices. I'm hoping that a small bump in fuel efficiency will offset the price of the extra $1.50 per fillup• 10¢/gallon
• $1.50/tank
• 1½-tanks/week
• 52 weeks/year
...and that breaks down to about additional $117 per year...at current price/gallon.
If you look at my post, the numbers I have include the MPG gain of 2.5%, but it's also at an average of 30MPG and on a 12,000 mile per year basis. So the assumptions I made are drastic, but give a basis of comparisonThere is always a price difference of $.10 so that's not just "current" prices. I'm hoping that a small bump in fuel efficiency will offset the price of the extra $1.50 per fillup
exactly, a possible $4 more per YEAR on gas, that's pretty much even to me. Even if the 2.5% you figured was slightly lowerIf you look at my post, the numbers I have include the MPG gain of 2.5%, but it's also at an average of 30MPG and on a 12,000 mile per year basis. So the assumptions I made are drastic, but give a basis of comparison