Well, I haven't managed to totally destroy my I-MiEV yet so I am off on another mission. The Transaxle in the I-MiEV uses ATF (automatic transmission fluid) as it's lubricant. I was digging through boxes of junk I have around and came across a couple of bottles of transaxle oil for use in the GM EV-1. It's a really low viscosity oil---about like water. The label says "Synthetic Motor Oil--For electric vehicles--Reduces viscous drag--Increases vehicle range". It was GM P/N 12371288 which is no longer available (except I found some in Italy for 30 euros a pint--maybe). I don't know who made this stuff, but if it worked in the EV-1, it should work in the I-MiEV. If it doesn't, I have a spare transaxle just in case. I don't know how much it will affect the range, but every little bit helps. Do enough minor changes and it might actually start to increase range.