switching gas blends

[magister]

my apologies if this has been asked before. could not locate the thread.

anyway, would it be ok to switch for example from regular unleaded 93 octane e10 to premium unleaded 95 octane without having to use up all the regular unleaded gas? no harmful effect on engine?

thanks.

[speed unlimited]

Wala naman masamang epekto sa makina maliban na lang kung may maramdaman kang tope sa makina . Ano bang sasakyan gamit mo. May mga sasakyan kasi nakalagay Use only 95 octane.