krewzlo
+1y
My yukon is a flex fuel so I don't have to convert it. I read today. It states 15-20% loss in economy but with higher octane, more power. I ran it all weekend while towing my 10000lb camper around. Usually pulling steep hills or long grades it would over heat. This weekend no overheating issues, it was hot out too. Seemed to have a little mopowr but could be in my head. I ran the calculation with a 15% loss it would cost me $3.00 more per tank to run it based on 30 gal. I would rather support the corn farmers then the fricken towel heads. Right now it is $.30 cheaper than regular but why should they go any cheaper as people think it is such a bargain. I am making an unloaded road trip with it this weekend on the freeway and am going to check actual milage with it. The best I got on the freeway on reg. was 18 but typically 16 or 17 mpg.