Quote:
Originally Posted by roosterk0031
At my usual station K&G today, E15 88 octane is $2.00, E10 87 $2.10, E0 87 $2.50, 91 e0 $2.65 and E85 $1.80
From experience with 2 FFV GM's I loose 18-20% mpg with E85 vs E10 so I wouldn't be E85 there. But when I fill up the impala at near home E10 was $2.23 yesterday and E85 was $1.80 right at the break even for cost per mile.
There must be less active people filling up, I used to struggle to say on the 2nd page of MPG or % over EPA(top 100), I haven't changed anything but now in the 30s.
Have you read any of the info on converting a Cruze(some Cobalts) to Flex Fuel, apparently all the fuel maps are in there just needs turned on, but the fuel maps aren't optimized for E85 so maybe you are even seeing that with low E blends. I'd like to turn it on in my Cobalts, but $600 to try to save a few penny's is bad math.
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Yeah I can't see the tune paying for itself for me. 5-600$ for a tune for what 3-4 mpg if your lucky. I think I'm squeezing everything out of my fuel I can already. Would need to upgrade injectors to a larger size and get the tune so guessing overall cost would be 700$ or so. Wonder how long it would take to make up for that? If I get say 55 average from here on out. 3-4 mpg increase really isn't much..7% 2.50$ a gal roughly say 14 gal a month...yeah that's only 35$ a month say 7% less is 2.50$ less. 30$ saving a year for me. 23 years it would be payed off lol sounds like bad math to me.
Extra thought I went from averaging about 23 mpg in a Monte Carlo to 50s in a Cruze. Gas cost was in the 90s now 35$ a month. 660$ a year gas savings.15-16 years to pay for the car