1) Lower MPG and lower cost per mile. Depending on acutal results (which seem to vary between 5-15% loss of mpg) it may be an economic alternative... cheaper per mile.

2) Why more frequent oil changes - my understanding was that E85 burns cleaner (and cooler) than gas?

3) What additional wear?

The environmental advantage is that this fuel is largely (85%) renewable and if we a lot of vehicles started running on it we'd be MUCH less dependent on foreign oil. Discounting the conspiracy theories - certainly you'll agree that worldwide a lot of "human interest" issues are caused by countries controling oil wealth.


My experience: I have a tunable ECU. I went with straight 13 gallons of E85 (4 gal gas). In order to get this to run right, I had to compensate with about 30% more fuel across my fuel map. That doesn't mean I'm using 30% more fuel at cruise, but my idle consumption has increased by 30%.

Increasing fuel by 30% and my ECU can compensate for everything else.

I'm suspicious of vendors saying that toyota injectors are not E85 compatable - I'd like to find why they say that - other vendors are offering "conversions" - basically just a box that increases pulse width by 30% for the Toyota.
I'm thinking it may have to do with injector impedance, rather than actual injector/fuel compat issues... :-)

The turbo loves E85. Knock sensor is almost completely quiet. I can add boost and run more timing.
I just need a big fat corn sticker on the back of the 4runner...