So added rhino today for the first time, first note, it stinks like mad and is so strong its hard to shift the smell if it gets on anything so don't spill any and don't get it on your seats. I've done a 100 miles today so far and do actually think the engine tone has changed ever so slightly, it seems a bit deeper but quieter. The engine feels slightly smoother too, and this is most noticeable by the reduction in vibration through the accelerator pedal. The biggest thing I have picked up on which I think is partly how busy then roads are today but for most of my journey I only had to apply the smallest amount of pressure to the pedal to get the amount of drive required which seemed far less than normal, I'm talking mm's of pedal travel to the point my leg wasn't used to the position so my muscles were twitching adjusting to it. Also today I saw 43mpg on the average trip for the first time ever. Its too early to tell if it will make many real difference but I am hopeful and will update with any findings in a few tank fulls
