Following on from Roy's recent message, here's a question that might be of a lot of interest to us European Imperial owners in particular. I have two propane powered cars, a ' 61 Imperial and a ' 76 Eldorado conv. (my daily driver) Both run fine on propane but there is about a 10 to 15% loss of power and consumption (more noticable on the fuel injected Caddy.) With the high cost of gasoline in Europe, running on propane makes a lot of sense, but I would love to get the same performance as gasoline. Seems to me W.I. could be a possible solution. I know W.I. is supposed to increase power. Can it also improve gas mileage? Are there any disadvantages I should know about like extra engine wear? How do you know how much water to inject? Could it would work with a propane powered car? Tony V.