Toro- I don't know if this is the right place for a consumer mower question, but you are the authority so I thought I'd try here. Regarding the Toro 20331 recycler mower with variable speed, what is the range of ground speed (roughly speaking)? I see in your brochure that the personal pace states 'over 4mph', I didn't see anything for the variable speed 20331. Also, what is the fuel capacity? ... and if possible to answer this question (I know there are variables regarding MOWING TIME, but what is the estimated RUN TIME for the mower with that fuel tank (at idle which should be laboratory environment). I thank you for your time answering these questions.