[Diy_efi] Is E85 worth it? Speed factor?

[Ian Molton]

Jim Kyser wrote:
> I would expect that it is lower than 55 for most larger vehicles. 
> Somewhere in high gear where the engine can move the car without 
> lugging. I would guess more like 45 for many vehicles. The reason I 
> suspect it's lower than 55 is wind resistance. It increases as a square 
> of speed, so it increases pretty quickly as speed goes up, especially on 
> vehicles with large frontal areas.

On my daihatsu its at approximately 30MPH in 5th gear. But thats a 
small, reasonably airodynamic little hatchback, with a nice little 
torquey diesel. The design was the firt to hit 100MPG under those 
conditions.