Thomas & Sons Cycle Shop wrote:
> In article >, dyno
> > wrote:
>
>>>>As the load increases, the octane requirement increases .
>>>>As the speed increases, the octane requirement decreases
>>>
>>>As the altitude increases, the octane requirement decreases
>>>As ambient termperature increases, octane requirement decreases
>
>
> There's also the humidity effect.
> As the humidity goes down, the octane requirement decreases.
>
snip

No, I think you have it backwards. High humidity is good for knock
suppression, reducing octane requirement.