Originally posted by so_nice:
v-power? also ron 98 mah. so wats the point? unless u're talking abt ron 101 which is wat japan's highest grade is..i remembered that caltex used to haf ron 100..is there a diff? anyone pump it before?
i believe u were referring to vortex platinum? dats supposedly rated at RON 100 but 4 some reason, caltex isn't declaring the figures as such.
contrary to popular belief, higher RON petrols actually "burns" slower than lower grade petrols. its hard to quantify on a molecular level, but higher RON fuels basically leaves lesser "competition" for air molecules to combust with which results in a more controlled and consistent combustion wavefront.
this is general desirable for engines with high compression or under boost because of their anti knock properties. with higher ron, it means u can run more aggressive timing, higher boost (therefore increase in power) with lesser risk of pre-detonation or overheating coz the A/F mix also burns cooler at the same time.
the downside is if u use it on e conventional non performance engine, it can't really utilize the benefits of a high RON grade petrol coz it was built with a higher threshold for poorer petrols as well as to be more fuel efficient in that sense. therefore, u might not feel any improvements if u are the owner of such cars.