Excellent news! Just keep in mind, if you get the same results with E30, as E10, that is actually an improvement! ( if you don't get less MPG feeding your car less gas )

Please check your water temp. if you have a digital display that shows individual degrees. With the precision of a ScanGuage, I found my car ran 3-5 degrees F hotternot colder when using 30% ethanol. If you have a temperature needle, you probably can't meaure such a small amount.

This may be an anomoly, I have a small sample size, but all the "experts" say ethanol makes your car run cooler. -Keep us posted. -John