Quote:
Originally Posted by FT-86GOD
Caltex 98 or BP 98  |
Is that really 98 octane? is that calculated as (r+m)/2?
I know in Vietnam everything says 98 octane, but it's RON (research octane) which only calculates the isooctane, not the heptane... rather than RON+MON/2 (which is how we calculate in US/CAD).