GW says their 2.4 is  9.4 - 1 CR and needs 89 octane gas.

They get $5500 + $1000 core charge just for the engine, not installed.

Mark

Scott Daniel - Turbovans wrote:
> .............
> I would not say that waterboxers engines are 'sensitive to fuel quality'
> myself.
> Not more than any other car.
> In all my waterboxers .........I use ordinary unleaded regular, even the
> cheaper Arco once in a while.
> Nary a problem ever.
>
> I missed a few posts, so maybe I missed what the compression ratio is on
> this GW engine - still curious about that.
>
>